Question

Solve each of the following equations and check your answers: $3(x+2)-2(x-1)=7$

Answer 1

$3(x+2)-2(x-1)=7$

$3x+6-2x+2=7$

$x+8=7$

$x=7-8$

$x=-1$

put $x=-1$

$3(-1+2)-2(-1-1)=7$

$3\left(1\right)-2(-2)=7$

$3+4=7$

$7=7$

Hence verified