`#khanhly2949`

`a,`

`x+16=14`

`=>x=14-16`

`=>x=-2`

Vậy `x=-2`

`b,`

`15-2x=65`

`=>2x=15-65`

`=>2x=-50`

`=>x=-25`

Vậy `x=-25`

`c,`

`-9+x=12`

`=>x=12-(-9)`

`=>x=12+9`

`=>x=21`

Vậy `x=21`

`d,`

`-15+2x=(-2)^4-1`

`=>-15+2x=16-1`

`=>-15+2x=15`

`=>2x=15-(-15)`

`=>2x=15+15`

`=>2x=30`

`=>x=15`

Vậy `x=15`

`e,`

`-27+24 : x=(-3)^3+3`

`=>-27+24:x=-27+3`

`=>-27+24 : x=-24`

`=>24 : x=27-24`

`=>24 : x=3`

`=>x=24 : 3`

`=>x=8`

Vậy `x=8`

`f,`

`30-3x=30-15`

`=>30-3x=15`

`=>3x=30-15`

`=>3x=15`

`=>x=5`

Vậy `x=5`

`g,`

`70+x:5=70-8`

`=>70+x:5=62`

`=>x:5=62-70`

`=>x:5=-8`

`=>x=(-8) . 5`

`=>x=-40`

Vậy `x=-40`

`h,`

`35+3x=35-(-18)`

`=>35+3x=35+18`

`=>35+3x=53`

`=>3x=53-35`

`=>3x=18`

`=>x=6`

Vậy `x=6`

`i,`

`94+x=-10-(15-94)`

`=>94+x=-10-15+94`

`=>94+x=-25+94`

`=>x=-94-25+94`

`=>x=(-94+94)-25`

`=>x=0-25`

`=>x=-25`

Vậy `x=-25`