Question

quanto é 7 (x-4)=2x-3

Answer 1

7(x-4)=2x-3
7x-28=2x-3
7x-2x=-3+28
5x=25
x=25/5
x=5

Answer 2

Resolução da questão, veja:

$7~\cdot~ (x-4)=2x-3\\\\\\\ 7x-28 = 2x-3\\\\\\ 7x-2x = -3 + 28\\\\\\\ 5x = 25\\\\\\ x = \dfrac{25}{5}}\\\\\\\\\ \large\boxed{\boxed{\boxed{\boxed{\boxed{\boxed{\boxed{ x = 5.}}}}}}}}}}}}}$

Espero que te ajude :).