Question

cómo resuelvo?

7x -8 +2x = 4x + 7

Answer 1

$7x - 8 + 2x = 4x + 7 \\ 7x + 2x - 4x = 7 + 8 \\ 5x = 15 \\ x = 15 \div 5 \\ x = 3$
el resultado es 3. espero haberte ayudado

Answer 2

7x -8 +2x = 4x + 7

9x - 8 = 4x + 7

9x-4x = 7 + 8

5x = 15

x= 15/5

x = 3