Question

How to do 6r+7=13+7r and must show all your steps?

Answer 1

6r + 7 = 13 + 7r

subtract 6r from both sides...

7 = 13 + r

subtract 13 from both sides...

-6 = r

r = -6

Answer 2

$6r+7=13+7r\ \ \ \ | subtract\ 6r\\\\ 7=13+r\ \ \ \ | subtract\ 13\ \ \ \\\\ -6=r\\\\Solution\ is\ r=-6.$