Решительно пж( проверить надо)
В) 0.2(0.7x - 5) + 0.02 = 1.4(x - 1.6) 0.14x - 0.98 = 1.4x - 2.24 1.26 = 1.26x x = 1.26/1.26 x = 1 г) 2.7(0.1x + 3.2) + 0.6(1.3 - x) = 16.02 0.27x + 8.64 + 0.78 - 0.6x = 16.02 -0.33x = 6.6 x = -6.6/0.33 x = -20