Question

матем решите дам все баллы​

Answer 1

$\displaystyle 2\frac{2}{3}:7=1\frac{1}{7}:m,m\neq 0\\\\2\frac{2}{3}m=7*1\frac{1}{7}\\\\\frac{8}{3}m=7*\frac{8}{7}\\\\\frac{8}{3}m=8\\\\m=3$