Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.
X + (- 35 ) = 18
X - 35 = 18
X = 18 + 35
X = 53
Vậy X = 53
- 2x -(- 17)= 15
- 2x + 17 = 15
- 2x = 15 - 17
- 2x = - 2
x = - 2 : ( - 2 )
x = 1
Vậy x = 1
1) x+ (-35)=18
<=> x-35=18
<=> x=53
2) -2x-(-17)=15
<=> -2x+17=15
<=> -2x=-2
<=> x=1
a) x+(-35)=18
x-35=18
x=18+35
x=53
vậy x=53
b) -2x-(-17)=15
-2x+17=15
-2x=15-17
-2x=-2
x=-2:(-2)
x=1
vậy x=1
a, - ( x + 84 ) + 213 = -16
=> - ( x + 84 ) = -16 - 213
=> - ( x + 84 ) =-229
=> x + 84 = 229
=> x = 145
b. x + ( -35 ) = 18
=> x = 18 - ( -35 )
=> x = 18 + 35
=> x = 53
c. -2x - ( - 17 ) = 15
=> -2x = 15 + ( -17)
=> -2x = -2
=> x = 1
\(a,-\left(x+84\right)+213=-16\)
\(x+84=213+16\)
\(x+84=229\)
\(x=229-84\)
\(x=145\)
\(b,x+\left(-35\right)=18\)
\(x=18+35\)
\(x=53\)
\(c,-2x-\left(-17\right)=15\)
\(-2x+17=15\)
\(2x=17-15\)
\(2x=2\)
\(x=1\)
Tìm số nguyên x, biết:
1) -16 + 23 + x = - 16
7+x=-16
x=-16-7
x=-23
2) 2x – 35 = 15
2x=15+35
2x=50
x=50:2
x=25
3) 3x + 17 = 12
3x=12-17
3x=-5
x=-5/3
4) (2x – 5) + 17 = 6
2x-5=6-17
2x-5=-11
2x=-11+5
2x=-6
x=-6:2
x=-3
5) 10 – 2(4 – 3x) = -4
2(4-3x)=10-(-4)
2(4-3x)=14
4-3x=14:2
4-3x=7
3x=4-7
3x=-3
x=-3:3
x=-1
6) - 12 + 3(-x + 7) = -18
3(-x+7)=-18-(-12)
3(x+7)=-6
x+7=-6:3
x+7=-2
x=-2-7
x=-9
11- (x+84) = 97
=> 11 -x - 84 = 97
=> 11-x = 181
=> x= 11- 181
=> x= -170
cấc câu sau làm tương tự
a) 416 + ( x-45 )= 387
416-45+x=387
x=387-(416-45)
x=16
b) 11-(x+84)=97
11-x-84=97
-x=84-11+97
-x=170
x=-170
c) -(x+84)+213=-16
-x-84+213=-16
-x=-16-213+84
-x=-145
x=145
d)x+(-35)=18
x-35=18
x=53
e) -2x-(-17)=15
-2x+17=15
-2x=-2
x=1
P/s tham khảo nha
A) 416 + (X-45) =387
416+X-45= 387
416-45+X=387
371+X=387
X=387-371
X=16
B) 11-(X+84)=97
11-X-84=97
11-84-X=97
-73-X=97
X=-73-97
X=-170
C) -(X+84) +213=-16
-X-(84-213) =-16
-X-(-129)=-16
-X=(-16)+(-129)
-X= -145
X=145
D) X+(-35)=18
X=18-(-35)
X=53
E) -2X-(-17) =15
-2X+17=15
-2X=15-17
-2X=-2
X=-2:-2
X=1
\(a,x+\left(-35\right)=18\)
\(\Rightarrow x=18-\left(-35\right)=18+35=53\)
\(b,-2x.\left(-17\right)=15\)
\(\Rightarrow-2x=-\frac{15}{17}\)
\(\Rightarrow x=\frac{-15}{17}:-2=\frac{-15}{17}.\frac{\left(-1\right)}{2}=\frac{15}{34}\)
\(c,\left|x+9\right|.2=10\)
\(\Rightarrow\left|x+9\right|=10:2=5\)
\(\Rightarrow\orbr{\begin{cases}x+9=5\\x+9=\left(-5\right)\end{cases}}\)\(\Rightarrow\orbr{\begin{cases}x=\left(-4\right)\\x=\left(-14\right)\end{cases}}\)
\(a,\)\(x+\left(-35\right)=18\)
\(\Leftrightarrow x=18+35=53\)
\(b,\)\(-2x\left(-17\right)=15\)
\(\Leftrightarrow2x=\frac{15}{17}\)
\(\Leftrightarrow x=\frac{15}{17}\cdot\frac{1}{2}=\frac{15}{34}\)
\(c,\)\(\left|x+49\right|\cdot2=10\)
\(\Leftrightarrow\left|x+49\right|=5\)
\(\Leftrightarrow\hept{\begin{cases}x+49=5\\x+49=-5\end{cases}}\)
\(\Leftrightarrow\hept{\begin{cases}x=-44\\x=-54\end{cases}}\)
-( x + 84 ) + 213 = -16
=> -x - 84 + 213 = -16
-x = -16 - 213 + 84
-x = -145
=> x = 145
x + ( -35 ) = 18
x = 18 - ( -35 )
x = 18 + 35 = 53
-2x - ( -17 ) = 15
=> -2x + 17 = 15
-2x = 15 - 17
-2x = -2
x = -2 : ( - 2 )
x = 1
x+(-35)=18
x = 18 - ( - 35 )
x = 53
2x - ( - 17 ) = 15
2x + 17 = 15
2x = 15 - 17
2x = -2
x = -2 : 2
x = -1
x+(-35)=18
x = 18 - (-35)
x = 53
vậy___
2x- (-17) = 15
2x = 15 + (-17)
2x = 32
x = 32 : 2
x = 16
vậy____