1. Tìm x
486:x-126:x=6
725:x+175:x=5
Tìm x
a) 162 : x + 216 : x = 6
b) 602 : x + 123 x 2 = 253
c) 486 : x - 126 :x = 6
d) 725 : x + 175 : x = 5
a) 162 : 𝑥 + 216 : 𝑥 = 6
(162 + 216) : x = 6
378 : x = 6
x = 378 : 6
x = 63
b) 602 : x + 123 x 2 = 253
602 : x + 246 = 253
602 : x = 253 - 246
602 : x = 7
x = 602 : 7
x = 86
c) 486 : x - 126 :x = 6
(486-126) : x = 6
360 : x = 6
x = 360 : 6
x = 60
d) 725 : x + 175 : x = 5
(725 + 175) : x = 5
900 : x = 5
x = 900 : 5
x = 180
Tìm x
a) 162 : x + 216 : x = 6
b) 602 : x + 123 x 2 = 253
c) 486 : x - 126 :x = 6
d) 725 : x + 175 : x = 5
a)\(162:x+216:x=6\)
⇔\(\left(162+216\right):x=6\)
⇔\(378:x=6\)
⇔\(x=63\)
b)\(602:x+123.2=253\)
⇔\(602:x+246=253\)
⇔\(602:x=7\)
⇔\(x=86\)
c)\(486:x-126:x=6\)
⇔\(\left(486-126\right):x=6\)
⇔\(360:x=6\)
⇔\(x=60\)
d)\(725:x+175:x=5\)
⇔\(\left(725+175\right):x=5\)
⇔\(900:x=5\)
⇔\(x=180\)
\(a.162:x+216:x=6\) \(b.602:x+123x2=253\)
\(\left(162+216\right):x=6\) \(602:x+246=253\)
\(378:x=6\) \(602:x=253-246\)
\(x=378:6=63\) \(602:x=7\)
\(x=602:7=86\)
\(c.486:x-126:x=6\) \(d.725:x+175:x=5\)
\(\left(486-126\right):x=6\) \(\left(725+175\right):x=5\)
\(360:x=6\) \(900:x=5\)
\(x=360:6=60\) \(x=900:5=180\)
a) 162 : x + 216 : x = 6
(162 + 216) : x = 6
378 : x = 6
x = 378 : 6
x = 63
b) 602 : x + 123 x 2 = 253
602 : x + 246 = 253
602 : x = 253 - 246
602 : x = 7
x = 602 : 7
x = 86
c) 486 : x - 126 :x = 6
(486 - 126) : x = 6
360 : x = 6
x = 360 : 6
x = 60
d) 725 : x + 175 : x = 5
(725 + 175) : x = 5
900 : x = 5
x = 900 : 5
x = 180
Học tốt !
Tìm x biết: 420+65 . 4=(x + 175) : 5+ 30
882 : (2 . x - 15) = 18
x - 4867= ( 175 . 2050 . 70) : 25 + 23
134 - [ (96 - 7 . x) : 4-2]= 126
4 - {100-[ (100-5 . x) : 8-5] :10} : 25= 0
cần câu trả lời gấp, ai nhanh mik tick cho ạ
\(1) 420+65.4=(x+175):5+30\)
\(\implies 420+260=(x+175):5+30\)
\(\implies 680=(x+175):5+30\)
\(\implies 650=(x+175):5\)
\(\implies 650.5-175=x\)
\(\implies 3075=x\)
\(2)x-4867=(175.2050.70):25+23\)
\(\implies x-4867=1004500+23\)
\(\implies x-4867=1004523\)
\(\implies x=1009390\)
\(3) 134-[(96-7x):4-2]=126\)
\(\implies (96-7x):4-2=8\)
\(\implies(96-7x):4=10\)
\(\implies 96-7x=40\)
\(\implies 7x=56\)
\(\implies x=8\)
\(4) 4-\{100-[(100-5x):8-5]:10\}:25=0\)
\(\implies 4-\{100-[(100-5x):8-5]:10\}=0\)
\(\implies 100-[(100-5x):8-5]:10=4\)
\(\implies 100-[(100-5x):8-5]=40\)
\(\implies (100-5x):8-5=60\)
\(\implies (100-5x):8=65\)
\(\implies 100-5x=520\)
\(\implies 5x=-420\)
\(\implies x=-84\)
~ Hok tốt a~
ban nao biet thi minh h
x : 5 + 126 = 324 x : 3 - 175 = 149 làm cho mình cả phép tính nữa nhé
Tìm x :
3(x+5) -3 = 2(x+1) +7
15-(x+2)² = -1
75-(2x+1)³ =11
3(x+5) -3 = 2(x+1) +7
⇒3x+15-3=2x+2+7
⇒3x+12=2x+9
⇒x=-3
15-(x+2)² = -1
⇒(x+2)2=16
⇒\(\left[{}\begin{matrix}x+2=4\\x+2=-4\end{matrix}\right.\)
⇒\(\left[{}\begin{matrix}x=2\\x=-6\end{matrix}\right.\)
75-(2x+1)³ =11
⇒(2x+1)³=64⇒\(\left[{}\begin{matrix}2x+1=8\\2x+1=-8\end{matrix}\right.\)⇒\(\left[{}\begin{matrix}x=3,5\\x=-4,5\end{matrix}\right.\)a) ta có: 3(x+5)-3=2(x+1)+7
nên 3x-2x=2+7-15+3
hay x=-3
b) Ta có: \(15-\left(x+2\right)^2=-1\)
nên \(\left(x+2\right)^2=16\)
\(\Leftrightarrow\left[{}\begin{matrix}x+2=4\\x+2=-4\end{matrix}\right.\Leftrightarrow\left[{}\begin{matrix}x=2\\x=-6\end{matrix}\right.\)
c) Ta có: \(75-\left(2x+1\right)^3=11\)
\(\Leftrightarrow2x+1=4\)
hay \(x=\dfrac{3}{2}\)
tìm x 7 nhân x +5 nhân x = 175+125
`7 xx x + 5 xx x = 175 + 125`
`( 7 + 5 ) xx x = 300`
`12 xx x = 300`
`x = 300 : 12`
`x = 25`
a) 7 x X +5 x X = 175 + 125.
7 + 5 x X = 300.
12 x X = 300.
x=300 : 12.
x=25.
Vậy X = 25.
Tick nha cảm ơn bạn.
Tìm x
a, 240 : +65 .4 = ( x + 175 ) : 5 + 30
b,( 32 . 5 ) :2 = (x + 70 ) : 14 - 2
c, x- 4867 = ( 175 . 2050 . 70 )
Bài 1.Tìm x
d,175+(30-x)=200
e,5(x+12)+22=92
f,95-5(x+2)=45
\(\left(d\right)30-x=200-175\)
\(30-x=25\)
\(x=5\)
\(\left(e\right)5\left(x+12\right)=70\)
\(x+12=14\)
\(x=2\)
tương tự 2 câu trên bạn tự làm câu cuối nhé, mình không ghi lại đề đâu
#quankun^^
d,175+(30-x)=200
(30-x) = 200 - 175
30 - x = 25
x = 30 - 25
x = 5.
e,5(x+12)+22=92
5(x+12) = 92 - 22
5(x+12) = 70
x+12 = 70 : 5
x + 12 = 14
x = 14 - 12
x = 2.
f,95-5(x+2)=45
5(x+2) = 95 - 45
5(x+2)= 50
x + 2 = 50 : 5
x + 2 = 10
x =10 -2
x = 8
Hok tốt !
\(d,175+\left(30-x\right)=200\Leftrightarrow175+30-x=200\Leftrightarrow x=5\)
\(e,5\left(x+12\right)+22=92\Leftrightarrow5x+60+22=92\)
\(\Leftrightarrow5x=10\Leftrightarrow x=2\)
\(f,95-5\left(x+2\right)=45\Leftrightarrow95-5x-10=45\Leftrightarrow5x=40\)\(\Leftrightarrow x=8\)
#Học tốt
Tìm x
a. ( x -1384) x 2 = 6478
b. 1855 : x = 175 : 5