№3 Решите уравнение: 1) -14x = -4.17; 2) 3.1 = -6.2; 3) 0.8(x - 2) - 0.7(x - 1) = 1.7

1) -14x = -4.17 x = -4.17 / (-14) x = 4.17 / 14 x = 0.297857... x ≈ 0.298 2) y = -6.2 y = -6.2 / 3.1 y = -2 3) 0.8(x - 2) - 0.7(x - 1) = 1.7 0.8x - 1.6 - 0.7x + 0.7 = 1.7 0.1x - 0.9 = 1.7 0.1x = 1.7 + 0.9 0.1x = 2.6 x = 2.6 / 0.1 x = 26 Ответ: 1) x ≈ 0.298 2) y = -2 3) x = 26