Question

respostas com contas

Answer 1

$e) \frac{x-1}{3} = \frac{2x+1}{3} \to mmc=3\to x-1=2x+1\to x-2x=1+1\to\\-x=2(-1)\tox=-2\\\\ \\ f) \frac{x}{5} - \frac{x}{6} = \frac{1}{4} \to mmc=60\to 12x-10x=15\to 2x=15\to x= \frac{15}{2}\\\\ \\ g) \frac{2x}{3} - \frac{3x}{2} =5\to mmc=6\to 4x-9x=30\to -5x=30\to x= \frac{-5}{30}\to \\x=\frac{1}{6} \\ \\\\ h) \frac{7x}{2} + \frac{3}{5} =4x\to mmc=10\to 35x+6=40x\to 35x-40x=-6\to \\-5x=-6\to x= \frac{-6}{-5} \to x= \frac{6}{5}$