Question

4цельх 5/14x-3цельх 11/21x=1целая 2/3

Answer 1

$4 \times \frac{5}{14} x - 3 \times \frac{11}{21} x = 1 \times \frac{2}{3} \\ \frac{61}{14} x - \frac{74}{21} x = \frac{5}{3} \\ \frac{1281 - 1036}{294} x= \frac{5}{3} \\ \frac{245}{294} x = \frac{5}{3} \\ x = \frac{5 \times 294}{3 \times 245} \\ x = 2$