Автор - artemyevatanya

5/9 + 1 5/7 * (4 2/3 - 2 5/8) / 1 3/4 вычислите

Ответ

Автор - 11081957vera
5/9+1 5/7*( 4 2/3-2 5/8): 1 3/4=
1) 4 2/3- 2 5/8=14/3- 21/8= 112/24-63/24=49/24=2 1/24
2) 1 5/7*2 1/24= 12/7*49/24= 12*49/7*24= 7/2=3 1/2
3)7/2:7/4=7*4/2*7=2
4) 5/9+2= 2 5/9

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