Вычислите дроби:a)3/4-(1 1/3-1 1/6) б)3 1/8 - (2/3+1/3) в)5 1/8 - (2 2/3 + 3/4)ПОМОГИТЕ...

Question

Вычислите дроби:a)3/4-(1 1/3-1 1/6) б)3 1/8 - (2/3+1/3) в)5 1/8 - (2 2/3 + 3/4)
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Answer 1

3/4 - ( 4/3 -7/6) = 3/4 - 1/6 = (9-2) /12 = 7/12 
3 1/8 - 1 = 25/8 - 8/8 = 17/8 = 2  1/8
5 1/8 - ( 8/3 + 3/4) = 41/8 - 33/12 = 57/24 = 2  9/24 = 2  3/8