317 x 6,3 +317 x3,6 +3,17
số thích hợp điền vào chỗ chấm của 31 tạ 7kg=.....................kg là:
A.3,17 B.3107 C.317 D.31,7
tim x biết 55=317-x - 317
x - 317 = 317 - 55
x - 317 = 262
x = 262 - 317
x = (-55)
T.I.C.K. GIÚP MK NHÉ!
55 = 317 - x - 317
55 - x = 317 - 317
55 - x = 0
x = 0 - 55
x = -55
55 = 317 - x - 317
<=> x = 55
Học tốt nha!!!
43 + (9 – 21) = 317 – (x + 317)
43 + ( 9 - 21 ) = 317 - ( x + 317 )
<=> 31 = 317 - x - 317
<=> 31 = -x
<=> x = -31
43+(9-21)=317-(x+317)
\(43+\left(9-21\right)=317-\left(x+317\right)\)
\(\Leftrightarrow\) \(43+9-21=317-x-317\)
\(\Leftrightarrow\) \(31=-x\) \(\Leftrightarrow x=-31\)
43+(9−21)=317−(x+317)43+(9−21)=317−(x+317)
⇔⇔ 43+9−21=317−x−31743+9−21=317−x−317
⇔⇔ 31=−x31=−x ⇔x=−31
43 + (9-21)=317-(x+ 317 )
\(43+\left(9-21\right)=317-\left(x+317\right)\)
\(43+9-21=317-x-317\)
\(31=317-317-x\)
\(31=0-x\)
\(\Rightarrow x+0=-31\)
\(x=\left(-31\right)-0\)
\(x=-31\)
\(43+\left(9-21\right)=317-\left(x+317\right)\)
\(43+\left(-12\right)=317+x-317\)
\(31=317+x+\left(-317\right)\)
\(31=317+\left(-317\right)+x\)
\(31=0+x\)
\(31=x\)
\(\Leftrightarrow x=31\)
Vậy \(x=31\) là giá trị cần tìm
\(43\) \(+\) \(\left(9-21\right)\) \(=\) \(317\) \(-\) \(\left(x+317\right)\)
\(43\) \(+\) \(\left(9-21\right)\) \(=\) \(317\) \(-\) \(x-317\)
\(43+\left(-12\right)\) \(=\) \(317-317-x\)
\(31\) \(=\) \(0-x\)
\(0+x=31\)
\(x\) \(=\) \(31-0\)
\(x\) \(=\) \(31\)
Tìm x:
43+9.21=317+(x-317)
Giúp với đag cần gấp
43+9.21=317+(x-317)
43+189=317+x-317
232=x
vaayj x=232
Tìm x:
43+9.21=317+(x-317)
Giúp với đag cần gấp
.
tìm x thuộc z biết
a, 43+(9-21)= 317-(x+317)
b, (15-x)+(x-12)=7-(-5+x)
\(43+\left(9-21\right)=317\left(x+317\right)\)
\(\Rightarrow317-\left(x+317\right)=43+\left(9-21\right)\)
\(\Rightarrow317-\left(x+317\right)=43+\left(-12\right)\)
\(\Rightarrow317-\left(x+317\right)=31\)
\(\Rightarrow x+317=317-31\)
\(\Rightarrow x+317=286\)
\(\Rightarrow x=286-317\)
\(\Rightarrow x=-31\)
Vay x = -31
\(b.\left(15-x\right)+\left(x-12\right)=7-\left(-5+x\right)\)
\(\Rightarrow15-x+x-12=7+5+x\)
\(\Rightarrow15-12=12-x\)
\(\Rightarrow3=12-x\)
\(\Rightarrow12-x=3\)
\(\Rightarrow x=12-3\)
\(\Rightarrow x=9\)
Vay x = 9
....
a) 43+(9-21) = 317-(x+317)
43+(-12) = 317-(x+317)
317-(x+317) = 31
x+317 = 317-31=286
x = 286-317=(-31)
Tạm thời câu b mình chưa nghĩ ra nha.
a) \(43+\left(9-21\right)=317-\left(x+317\right)\)
\(43+\left(-12\right)=317-\left(x+317\right)\)
\(317-\left(x+317\right)=31\)
\(x+317=317-31=286\)
\(x=286-317=-31\)
b) \(\left(15-x\right)+\left(x-12\right)=7-\left(-5+x\right)\)
\(15-x+x-12=7+5-x\)
\(7+5-x=\left(15-12\right)+\left(-x+x\right)\)
\(7+5-x=3+0=3\)
\(5-x=3-7=-4\)
\(x=5-\left(-4\right)=5+4=9\)
b) x−15−[(27+x)−(x−13)]=−1
Bài 3. Tìm số nguyên x , biết: a) 43+(9−21)=317−(x−317)
b) (15−x)+(x−12)=7−(−5+x)
a.(3x-24).7mũ3=2.47
b.43+(9-21)=317-(x+317)
c.(x+1)+(x+2)+(x+3)+...+(x+100)=7450
giúp mik với mai mik phải nộp bài r:(