Question

СРОЧНО ДАЮ 20 БАЛОВ

Answer 1

$\displaystyle \left \{ {{\frac{u}{3}+\frac{t}{2}=\frac{8}{3} } \atop {\frac{u}{2}+\frac{t}{3}=3 }} \right.\\ \\\left \{ {{\frac{u}{3}+\frac{t}{2}=\frac{8}{3} } \atop {u=6-\frac{2}{3}t }} \right. \\\\\frac{6-\frac{2}{3}t }{3}+\frac{t}{2}=\frac{8}{3}\\ \\t=\frac{12}{5}=2,4 \\u=6-\frac{2}{3}*\frac{12}{5}\\ \\u=\frac{22}{5}=4,4\\ \\(t,u)=(2,4;4,4)$