Question

Resolva a inequação 3(1 - 2x) < 2(x + 1) + 1 - 7.​

Answer 1

$\Large\boxed{\begin{array}{l}\sf 3\cdot(1-2x)<2\cdot(x+1)+1-7\\\sf 3-6x<2x+2-6\\\sf -6x-2x<2-6-3\\\sf -8x<-7\cdot(-1)\\\sf 8x>7\\\\\sf x>\dfrac{7}{8}\\\\\sf S=\bigg\{x\in\mathbb{R}/x>\dfrac{7}{8}\bigg\}\end{array}}$