Question

Помогите решить.
(8целых 7/12-х):20=7/40

Answer 1

$(8 frac{7}{12} - x) div 20 = frac{7}{40} \ 8 frac{7}{12} - x = frac{7}{40} times 20 \ 8 frac{7}{12} - x = frac{140}{40} \ 8 frac{7}{12} - x = frac{7}{2} \ - x =3 frac{1}{2} - 8 frac{7}{12} \ - x = 3 frac{6}{12} - 8 frac{7}{12} \ - x = - 5 frac{1}{12} \ x = 5 frac{1}{12}$

Answer 2

Спасибо большое