745:
1) -0,8a * 0,45b * (-c) = -0.36ab * -c (-1c) = 0.36abc
2) m(-0.75n) * (-0.6k) = -0.75mn * -0.6k = 0.45mnk
3) 3(1.6x - 0.7y) - 1.8x + 0.1y = 4.8x - 2.1y - 1.8x + 0.1y = 3x - 2y
4) -5(0.9m - 1.1n) - 1.5m + 1.9n = -4.5m + 5.5n - 1.5m + 1.9n = -7m + 7.4n
Объяснение:
не 10 а 5 но мне не жалко
745:
1) -0,8a * 0,45b * (-c) = -0.36ab * -c (-1c) = 0.36abc
2) m(-0.75n) * (-0.6k) = -0.75mn * -0.6k = 0.45mnk
3) 3(1.6x - 0.7y) - 1.8x + 0.1y = 4.8x - 2.1y - 1.8x + 0.1y = 3x - 2y
4) -5(0.9m - 1.1n) - 1.5m + 1.9n = -4.5m + 5.5n - 1.5m + 1.9n = -7m + 7.4n
Объяснение:
не 10 а 5 но мне не жалко