96 - 3(x + 1) = 42
<=> 96 - 3x - 3 = 42
<=> 96 - 3 - 42 = 3x
<=> 3x = 51
<=> x = 17
\(96-3\left(x+1\right)=42\)
\(3\left(x+1\right)=96-42=54\)
\(x+1=54:3=18\)
\(x=18-1=17\)
\(96-3\left(x+1\right)=42\)
\(\Leftrightarrow x+1=18\)
hay x=17
3.(x+1)=96-42
3.(x+1)=54
x+1=54:3
x+1=18
x=18-1
x=17
\(96-3.\left(x+1\right)=42\)
\(\Rightarrow3.\left(x+1\right)=54\)
\(\Rightarrow x+1=18\)
\(\Rightarrow x=17\)
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
vậy 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`
