Question

(x-5)/10+(1-2x)/5=(3-x)/4

Answer 1

$\frac{x-5}{10} + \frac{1-2x}{5}= \frac{3-x}{4} \\ \\\frac{2\cdot(x-5)}{20} + \frac{4\cdot(1-2x)}{20}= \frac{5\cdot(3-x)}{20} \\ \\\frac{2x-10}{20} + \frac{4-8x}{20}= \frac{15-5x}{20} \\ \\2x-10+4-8x=15-5x\\ \\2x-8x+5x=15+10-4\\ \\-x=21\\ \\x= \frac{21}{-1} \\ \\x=-21 \\ \\S=\{-21\}$