Question

517. Розв'яжи рівняння: 1) x + 3 2/5 = 7 2/3 2) x - 5 3/5 = 1, 8 3) 4, 2 - x = 3 1/6​

Answer 1

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

$2)x - 5 \frac{3}{5} = 1 \frac{8}{10} \\ x = 1 \frac{8}{10} + 5 \frac{3}{5} \\ x = 6 \frac{14}{10}$

$3)4 \frac{2}{10} - x = 3 \frac{1}{6} \\ x = 4 \frac{2}{10} - 3 \frac{1}{6} \\ x = 1$