\(96-3\left(x+1\right)=42\)
<=> \(3\left(x+1\right)=54\)
<=> \(x+1=18\)
<=> x=17
\(\left(x-38\right):18=12\)
<=> \(x-38=216\)
<=> \(x=254\)
học tốt
96-3( x + 1 ) = 42
3( x + 1 ) = 54
x + 1 = 18
x = 17
( x - 36 ) : 18 = 12
x - 36 = 216
x = 252
96 - 3 ( x + 1 ) = 42 ( x - 36 ) : 18 = 12
3 ( x + 1 ) = 96 - 42 x - 36 = 12 x 18
3 ( x + 1 ) = 54 x - 36 = 216
x + 1 = 54 : 3 x = 216 + 36
x + 1 = 18 x = 252
x = 18 - 1 Vậy x = 252
x = 17
Vậy x = 17