3/8+1/2+1/14-(1/28+5/7)

Question

3/8+1/2+1/14-(1/28+5/7)

Answer 1

1) 1/28 + 5/7 = 1/28 + 20/28 = 21/28 
2) 3/8 + 1/2 = 3/8 + 4/8 = 7/8 
3) 7/8 + 1/14 - 21/28 = 49/56 + 4/56 - 42/56 = 53/56 - 42/56 = 11/56

Comments

спасибо