96 - 3(x + 1) = 42
3(x + 1) = 96 - 42
3(x + 1) = 54
x + 1 = 54 : 3
x + 1 = 18
x = 18 - 1
x = 17.
\(96-3\left(x+1\right)=42\)
\(\Rightarrow3\left(x+1\right)=96-42\)
\(\Rightarrow3\left(x+1\right)=54\)
\(\Rightarrow x+1=54:3\)
\(\Rightarrow x+1=18\)
\(\Rightarrow x=18-1\)
\(\Rightarrow x=17\)
Vậy...............
96 - 3 ( x + 1 ) = 42
3 ( x + 1 ) = 96 - 42
3 ( x + 1 ) = 54
x + 1 = 54 : 3
x + 1 = 18
x = 18 - 1
x = 17
96-3[x+1]=42
3[x+1]=96-42
3[x+1]=54
x+1=54:3
x+1=18
x=18-1=17
tick mk nha
96-3(x + 1)=42
3(x + 1)=96-42
3(x + 1)=54
(x + 1) =54:3
(x + 1) =18
x =18-1
x =17
96-3(x+1)=42
3(x+1)=96-42
3(x+1)=54
(x+1)=54:3
x+1=18
x=18-1
x=17
