Question

Solve $3(x+2)-2(x-1)=7$for the value of $x$.

Answer 1

$$\begin{gathered} 3(x+2)-2(x-1)=7 \\ \Rightarrow 3x+6–2x+2=7 \\ \Rightarrow x+8=7 \end{gathered}$$

Subtract $8$ on both sides,

$$\begin{gathered} x+8–8=7–8 \\ \Rightarrow x=–1 \end{gathered}$$

Hence, $x=-1$ is the correct answer.