Question

10x+7=3x-21
How to do this friends

Answer 1

$10x + 7 = 3x - 21 \\ 10x - 3x = - 21 - 7 \\ 7x = - 28 \\ x = \frac{-28}{7} \\ x = -4$

Plz mark my answer as the brainliest

Answer 2

10x+7 = 3x -21

10x-3x = -21-7

7 x = -28

x = -28/7

= -4

hope it helps...