4,2*(- 1/35) + 121/169 * (- 1 2/11) - (- 3) * 1/25=

-11/13

Пошаговое объяснение:

1) 4,2 * (-1/35) = 42/10 * (-1/35) = 6/10 * (-1/5) = -6/50 = -3/25

2) 121/169 * (-1. 2/11) = 121/169 * (-13/11) = 11/13 * (-1/1) = -11/13

3) -3 * 1/25 = -3/25

4) -3/25 + (-11/13) - (-3/25) = -3/25 - 11/13 + 3/25 = -11/13