Question

ENCONTRE A SOLUÇÃO DA INEQUAÇÃO ABAIXO
x/3 + 4 < 3x

Answer 1

 $\frac{x}{3}+4\le \:3x\\\\\frac{x}{3}+4-4\le \:3x-4\\\\\frac{x}{3}\le \:3x-4\\\\\frac{x}{3}\cdot \:3\le \:3x\cdot \:3-4\cdot \:3\\\\\x\le \:9x-12\\\\x-9x\le \:9x-12-9x\\\\-8x\le \:-12\\\left(-8x\right)\left(-1\right)\ge \left(-12\right)\left(-1\right)\\\\8x\ge \:12\\\\\\\\frac{8x}{8}\ge \frac{12}{8}\\\\x\ge \frac{3}{2}$

Espero Ter Ajudado !