Question

Solve for x: 7+4x=13+x

Answer 1

$7+4x=13+x\ \ \ |Subtract\ x\\\\ 7+3x=13\ \ \ Subtract\ 7\\\\ 3x=6\ \ \ |Divide\ by\ 3\\\\ x=2\\\\ Solution\ is\ x=2.$

Answer 2

$7+4x=13+x \\\\4x-x=13-7 \\\\3x=6 \\\\\boxed{x=\frac{6}{3}=2}$