Question

найдите значение числового выражения 2) (4/7-3/2)*(1/13-1/4) 3)4 2/3+1/4*(1 7/9+1/9) 4) 5 1/7-1/7*(1 3/4+1/4)​

Answer 1

2)9/56

3)5 5/36

4)4 6/7

Объяснение:

2)(4/7-3/2)*(1/13-1/4)=-13/14*(-9/52)=1/14*9/4=9/56

3)

4 2/3+1/4*(1 7/9+1/9)=14/3+1/4*(16/9+1/9)=14/3+1/4*17/9=14/3+17/36=5 5/36

4)

5 1/7-1/7*(1 3/4+1/4)=36/7-1/7(7/4+1/4)=36/7-1/7*2=36/7-2/7=4 6/7