Question

6x + 7 = 13 + 7x

Explanation:

Step1: Subtract 6x from both sides

$6x + 7 - 6x = 13 + 7x - 6x$
Simplifies to: $7 = 13 + x$

Step2: Subtract 13 from both sides

$7 - 13 = 13 + x - 13$
Simplifies to: $-6 = x$ or $x = -6$

Answer:

$x = -6$