19/20-(1/4+2/5) 1/30+(3/5-1/6)

Question

19/20-(1/4+2/5) 1/30+(3/5-1/6)

Comments

.Два примера?

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да

Answer 1

19/20-(1/4+2/5)=19/20-(5/20+8/20)=19/20-13/20=6/20=3/10
1/30+(3/5-1/6)=1/30+(18/30-5/30)=1/30+13/30=14/30=7/15

Comments

спс