Question

Помогите пожалуйста !!!

Answer 1

1) 1 5/35 + 21/35 - 31/35 = 61/35 - 31/35 = 30/35 = 6/7

2) 35/30 + 12/30 - 27/30 = (47-27)/30 = 20/30 = 2/3

Answer 2

$frac{7}{6} + frac{2}{5} - frac{27}{30} = \ = frac{35 + 12 - 27}{30} = frac{20}{30 } = frac{2}{3}$

Answer 3

а первое?