Question

(2/7 -3/4)*(2/13-1/2) решить пример

Answer 1

=2/7*(2/13-1/2)-3/4*(2/13-1/2)=4/91-2/4-6/52+3/8=(4/91-6/52)+(-2/4-3/8)=(16/364-42/364)+(-4/8-3/8)=-26/364-7/8=-52/728-637/728=-689/637=-1и52/637

Answer 2

$frac{2}{7} - frac{3}{4} = - frac{1}{3}; frac{2}{13} - frac{1}{2} = frac{1}{11}; - frac{1}{3} * frac{1}{11} = - frac{1}{33}$