Question

х/3 - 7/15 = 1/5 - 2-х/3 (2-х третьих)

Answer 1

$frac{x}{3}-frac{7}{15}=frac{1}{5}-2-frac{x}{3}\\2cdot frac{x}{3}=frac{7}{15}+frac{1}{5}-2\\frac{2}{3}cdot x=frac{7+3-30}{15}=-frac{20}{15}=-frac{4}{3}\\x=-frac{4}{3}cdot frac{3}{2}=-2$