tim x biet x+12/43-x = 2/3
tim so nguyen x biet x=12+43
x = 12 + 43
x = 55
Tick nha! Đặng Tiến Thành
ai biet giup minh voi
| - 18 | + ( - 12) va 2^3 .2^2+ 5^7 : 5^5 - 3^2 .6
va tim x biet
3^10 : ( 43- 4x ) = 3^7
bai 1 tim x biet
a)x-43+7=49-(50+3)
b)-(x-16)+70=45
bai2 tim x biet
a)2x-(-60)=3x-18
b)-45-5x=10-4x
a,
x-43+7=49-(50+3)
<=>x-36=49-53
<=>x-36=-4
<=>x=-4+36
<=>x=32
b
-(x-16)+70=45
<=>-x+16+70=45
<=>-x+86=45
<=>x=86-45
<=>x=41
Bài 2
a.,
2x-(-60)=3x-18
<=>2x+60=3x-18
<=>3x-2x=60+18
<=>x=78
b,
-45-5x=10-4x
<=>-4x+5x=-45-10
<=>x=-55
Nếu thấy bài làm của mình đúng thì tick nha bạn,mình xin chân thành cảm ơn.
a) x- 43 + 7 = 49 - (50 + 3)
x - 36 = -4
x = -4 + 36
x = 32
b) -(x - 16) + 70 = 45
-(x - 16) = -15
x - 16 = 15
x = 31
Bài 2:
2x - (-60) = 3x - 18
2x + 60 = 3x - 18
3x - 2x = 60 + 18
x = 78
b) -4- 5x = 10 - 4x
5x - 4x = -4 - 10
x = -14
tim x biet:
23.(43-x)=23
23 . ( 43 - x) = 23
43-x=23:23
43-x=1
x=43-1
x=42
23 . ( 43 - x ) = 23
43 - x = 23 : 23
43 - x = 1
x = 43 -1
x = 42
Vậy x = 42
Học tốt!!!
23.(43-x)=23
(43-x)=23:23
(43-x)=1
x=43-1
x=42
vậy x=42
bai 1: Tim x biet
\(\hept{\begin{cases}x-y=\frac{3}{10}\\y\left(x-y\right)=-\frac{3}{50}\end{cases}}\)
bai 2: Tim x, y biet:
x+\(\left(-\frac{31}{12}\right)^2\)=\(\left(\frac{49}{12}\right)^2\)-x=y2
Bai 9: Tim x,y,z biet:
(x-1)2+(x+y)2+(xy-z)2=0
a) thay \(x-y=\frac{3}{10}\)vào \(y\left(x-y\right)=\frac{-3}{50}\)ta có\(\frac{3}{10}y=\frac{-3}{50}\)=>\(y=\frac{-3}{50}:\frac{3}{10}=\frac{-1}{5}\)=>\(x-y=\frac{3}{10}\Rightarrow x=\frac{3}{10}+\frac{-1}{5}=\frac{1}{10}\)
hôm sau mik giải tip cho
Tim xEZ biet
a) x + ( -45 )=(-62) + 17
b) x + 29=/-43/ + (-43)
c) 5 + / x+1/ =29
a) x+(-45)=(-62)+17
=>x-45=-45
=>x=-45+45
=>x=0
b) x+29=/-43/+(-43)
=>x+29=43-43
=>x+29=0
=>x=-29
c) 5+/x+1/=29
=>/x+1/=29-5=24
\(\orbr{\begin{cases}x+1=24\\x+1=-24\end{cases}}\Rightarrow\orbr{\begin{cases}x=23\\x=-25\end{cases}}\)
P/s tham khảo bài mình nha
a ) x + (-45) =-45
= > x = 0
b ) x + 29 = 0
=> x = -29
c ) => /x+1/ = 29-5
/x+1/ = 24
=> x+1 = + - 24
TH1 : x+1=24
=> x =23
th2 : x+1 = -24
=> x =-25
vậy x thuộc { 23 ; -25}
Bai 1 Tim x biet
a)162+(15-x0=125
b)x^3*x^2=2^7/4
c)5(x+27)=200
d)x-3=6-(19-23)
e)(x+32)-145=92
f) 2*3^x=162
g)9x-9=3^2/3
h)162-(15+x)=148
Bai 2 Thuc hien phep tinh
a)12+14+16+18+...+86+88
b)217+[43+(-217)+(-23)]
c) (-345)+[(-724)+345+224]
d)2^3*3-(12-36)
mình giải ý c
5(x+27)=200
(x+27)=200:5
(x+27)=40
x=40-27
x=13
tim x biet 7+x/12=2/3 b)25-x/18=1/2
Ta có (7+x)/12=2/3
suy ra 3(7+x)=24
suy ra 7+x=8
x=1
Ta có (25-x)/18=1/2
suy ra 2(25-x)=18
suy ra 25-x=9
x=16
ai giúp mình bài này mình cho 3 like luôn
tim x ,biet
-(x+4)+(12+x)=2.x+12
-(x+4)+(12+x)=2.x+12
=> -x-4+12+x=2.x+12
=> 8=2.x+12
=> 2.x+12=8
=> 2.x=-4
=> x=-4:2
=> x=-2