Автор - msarina03

помогите пожалуйста 2 2/3: 2+(4/15+2/5):(3 1/3*3/5). 5 1/6:31+(3 1/4+2 1/6):2 3/5-2/3:4/9

Ответ

Автор - 11081957vera
2 2/3:2 +(4/15+2/5):(3 1/3*3/5)= 1 2/3
1)4/15+2/5=4/15+6/15=10/15=2/3
2) 3 1/3 *3/5=10/3*3/5=30/15=2
3)2/3:2=1/3
4)2 2/3:2=4/3
5)4/3+1/3=5/3=1 2/3

5 1/6:31+(3 1/4+2 1/6):2  3/5-2/3:4/9=
1)3 1/4+2 1/6=72/24+42/24=114/24= 4 18/24 4 3/4
2) 5 1/6:31=31/6:31=1/6
3) 4 3/4:2 3/5=19/4:13/5=19*5/4*13=95/52 =1 43/52
4)2/3:4/9=3/2
5)1 43/52:3/2= 95/52:3/2=95/78=1 17/78

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