Question

Alguém me ajuda com essas duas?

Answer 1

$d)\ \frac{3}{2} x-\frac{4}{5}=2x\\ \\ \frac{15x}{10}-\frac{8}{10}=\frac{20x}{10}\\ \\15x-8=20x\\ \\15x-20x=8\\ \\-5x=8\\ \\x=\frac{8}{-5}\\ \\x=-\frac{8}{5}\\ \\S=\Big\{-\frac{8}{5}\Big\}$

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$e)\ \frac{3}{4}- \frac{y}{6}= \frac{y}{8} - \frac{1}{3}\\ \\\frac{18}{24}- \frac{4y}{24}= \frac{3y}{24} - \frac{8}{24}\\ \\18-4y=3y-8\\ \\-4y-3y=-8-18\\ \\-7y=-26\\ \\y= \frac{-26}{-7} \\ \\y= \frac{26}{7} \\ \\S=\Big\{\frac{26}{7}\Big\}$