Question

5x-3(x+2)=15 ???????

Answer 1

$\mathsf{5x-3(x+2)=15}\\\\ \mathsf{5x-3x-6=15}\\\\ \mathsf{2x=15+6}\\\\ \mathsf{2x=21}\\\\ \boxed{\mathsf{x=\dfrac{21}{2}}}$

Answer 2

Boa noite!

5x - 3(x + 2) = 15

5x - 3x - 6 = 15

2x = 15 + 6

2x = 21

x = 21 / 2