Question

521 вычислите пожалуйста ​

Answer 1

Пошаговое объяснение:

№3

1) 0,75 : (-3/20) = 75/100 * (-20/3) = 25/5 * (-1/1) = -25/5 = -5

2) 8,4 : (-2/3) = 84/10 * (-3/2) = 42/10 * (-3/1) = -126/10 = -12,6

3) -5 - (-12,6) = -5 + 12,6 = 7,6

№4

1) 7,6 : (-1 4/15) = 76/10 : (-19/15) = 76/10 * (-15/19) = 4/2 * (-3/1) = -12/2 = -6

2) -9,75 : 1 1/12 = -975/100 : 13/12 = -975/100 * 12/13 = -75/25 * 3/1 = -3 * 3/1 = -9/1 = -9

3) -6 - (-9) = -6 + 9 = 3