Question

674. Выполните действие:​

Answer 1

Пошаговое объяснение:

№1

1) -3 1/4 + 2 1/6 = -3 3/12 + 2 2/12 = -1 1/12

2) -1 1/12 * (-2 2/11) = -13/12 * (-24/11) = -13/1 * (-2/11) = 26/11 = 2 5/11

3) -5/6 + 1 3/5 = -25/30 + 1 18/30 = -25/30 + 48/30 = 23/30

4) -4/5 - 1,2 = -4/5 - 1 1/5 = -1 5/5 = -2

5) 23/30 * -2 = -46/30 = -23/15 = -1 8/15

6) 2 5/11 - (-1 8/15) = 2 5/11 + 1 8/15 = 2 75/165 + 1 88/165 = 3 163/165

№2

1) -2 2/5 - 1 1/3 = -2 6/15 - 1 5/15 = -3 11/15

2) -3 11/15 * (-1 17/28) = -56/15 * (-45/28) = -2/1 * (-3/1) = 6/1 = 6

3) 5 2/3 - 8 3/4 = 5 8/12 - 8 9/12 = -3 1/12

4) -8 3/4 + 5 2/3 = -8 9/12 + 5 8/12 = -3 1/12

5) -3 1/12 * (-3 1/12) = -37/12 * (-37/12) = 1369/144 = 9 73/144

6) 6 + 9 73/144 = 15 73/144