Giải cho em vs ạ a, (x-35)-120=0 b, 124+(118-x) =217 c, 156-(x+61)=82 Cảm ơn m. n nha!

a, $(x-35)-120=0$

$x-35=0+120$
$x-35=120$

$x=120+35$

$x=155$

Vậy $x=155$
b, $124+(118-x)=217$

$118-x=217-124$

$118-x=93$

$x=118-93$

$x=25$

Vậy $x=25$
c, $156-(x+61)=82$

$x+61=156-82$

$x+61=74$

$x=74-61$
$x=13$

Vậy $x=13$