Question

РЕШИТЬ!
9/16(5 1/3x-2/3y)-7/20(2 6/7x-5 5/7y)

Answer 1

Ответ: (3x-3/8y)-(x-2y)=3x-3/8y-x+2y=2+5/8y

Answer 2

$frac{9}{16} (5 frac{1}{3} x - frac{2}{3} y) - frac{7}{20} (2 frac{6}{7} x - 5 frac{5}{7} y) = \ = frac{9}{16} (frac{16}{3} x - frac{2}{3} y) - frac{7}{20} ( frac{20}{7} x - frac{40}{7} y) = \ =3x - frac{3}{8} y - x + 2y = \ = 2x + 1 frac{5}{8} y$