a, -(x+84) + 213=-16
-(x+84)+231=-16
-(x+84)=-16-231
-(x-84)=-247
=>x+84=247
x=247-84
x=163
b, -12 (x-15)+ 7(3-x) = 15
-12x+180+21-7x=15
(-12x-7x)+(180+21)=15
-19x+201=15
-19x=15-201
-19x=-186
x=-186:-19
x=186/19
a, -(x+84) + 213=-16
-(x+84)+231=-16
-(x+84)=-16-231
-(x-84)=-247
=>x+84=247
x=247-84
x=163
b, -12 (x-15)+ 7(3-x) = 15
-12x+180+21-7x=15
(-12x-7x)+(180+21)=15
-19x+201=15
-19x=15-201
-19x=-186
x=-186:-19
x=186/19
Tím x biết:
a, 461+(x-45)=387
b, 11-(-53+x)=97
c, -(x+84)+213=-16
d, 2. (x-5)-3(x-4)=-6-15.(-3)
e, 15-(4-x)=6
j, -30+(25-x)=-1
g,(2x-5)+17=6
h, 10-2(4-3x)=-4
i,-12+3(-x+7)=-18
k,24:(3x-2)=-3
l,-45:5.(-3-2x)=3
m, 3x+27=9
11-(x+84)=97
-(x+84)+213=-16
x+(-35)=18
-2x-(-17)=15
Tìm x, biết :
- ( x + 84 ) + 213 = -16
| x + 2 | = 341 + ( - 25 )
| x + 7 | = | - 15 |
19 - | x - 1 | = 4
giúp mk nha ! ai nhanh mk tick
Tìm x
a, - ( x + 84 ) + 213 =-16
b, x + (-35) =18
c, -2x - (-17 ) =15
a) 416 + ( x-45 )= 387
b) 11-(x+84)=97
c) -(x+84)+213=-16
d)x+(-35)=18
e) -2x-(-17)=15
TÌm các số nguyên x biết:
a. (x-12)-15=(20-7)-(18+x)
b.(x-96)=433-(x+15)
c.(x-84)+499=-(x-281-534)
d.(x-12)-(741+23)=-(754+x)
Giải hộ mình với
Bài 2:Tìm các số nguyên x biết:
a) -(x+84)+213=-16
b) x+(-35)=18
c) -2x-(-17)=15
Tìm số nguyên x biết :
a,-14 - 7+x= - 12 b,x+(-15)-(-6)=11
c,x-[18+(-7)]=15 d,-84+(-18-6)=x+(-20)
Tìm x yhuoocj Z biết:
a) x-96=(443-x)-15
b) (x-12)-15=(20-7)-(18+x)
c) 311-x+82=46+(x-21)
d) -(x-3+85)=(x+70-71)-5
e) (-x+821+534)=499+(x-84)
f) x+96=(443-x)