Question

por que -1/4x-1/8=0 da -1/2

Answer 1

$\sf -\dfrac14x-\dfrac18=0\\\\\\\sf -\dfrac14x=\dfrac18\\\\\\\sf \dfrac14x=-\dfrac18\\\\\\\sf x = -\dfrac18\cdot4\\\\\\\sf x = -\dfrac{1\cdot4}{8}\\\\\\\sf x = -\dfrac48\\\\\\\boxed{\sf x = -\dfrac12}$

Bons estudos.