3целых 3/4×2/5-3целых6/25× 5/27

Question

3целых 3/4×2/5-3целых6/25× 5/27

Comments

ответ 9/10 мне нужно решение

Answer 1

3 3/4 * 2/5 - 3 6/25 * 5/27=9/10
1) 3 3/4 * 2/5 = 15/4 * 2/5 = (15*2)/(4*5)=3/2
2) 3 6/25 * 5/27 = 81/25 * 5/27 = (81*5)/(25*27)=3/5
3) 3/2-3/5=15/10-6/10=9/10

Comments

1 целая 17/28×14/9+14/25×5/7 = помогите

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1) 1 17/28 * 14/9=45/28*14/9=5/2=2 1/2 ......2) 14/25*5/7=2/5......3)2 1/2+2/5=2 9/10

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спасибо

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класс

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класч

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цра

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ураура