Question

0.3+(4.7-5 1\9)=?
-(4 1/2-2 1/9)- 3 1/9

Answer 1

Пошаговое объяснение:

№1

1) 4,7 - 5 1/9 = 4 7/10 - 5 1/9 = 4 63/90 - 5 10/90 = 4 63/90 - 4 100/90 = -37/90

2) 0,3 + (-37/90) = 0,3 - 37/90 = 3/10 - 37/90 = 27/90 - 37/90 = -10/90 = -1/9

№2

1) -(4 1/2 - 2 1/9) = -(4 9/18 - 2 2/18) = -(2 7/18) = -2 7/18

2) -2 7/18 - 3 1/9 = -2 7/18 - 3 2/18 = -5 9/18 = -5 1/2