Question

Вычисли
а) 8/9 х 3/4 -(5/6 - 1/4)
б) 3/5 + 4/5 * 3/7 + 6/7
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Answer 1

5/6 - 1/4=10/12-3/12=7/12
8/9*3/4=2/3
2/3-7/12=8/12-7/12=1/12

4/5 * 3/7=12/35
3/5+12/35=21/35+12/35=33/35
33/35+6/7=33/35+30/35=63/35=1 4/5