Question

qual é a equacão ?100+7x=2x

Answer 1

$100 + 7x = 2x\\\\\\ 7x - 2x = -100\\\\ 5x = -100\\\\\\ x = \dfrac{-100}{5}\\\\\\ \large\boxed{\boxed{\boxed{ x = -20.}}}}}}}$

Espero que te ajude :).

Answer 2

100+7x=2x
7x-2x=-100
5x=-100
x=-100/5
x=-20 

Reposta: X= -20