ответ: -4
Пошаговое объяснение:
1) 4 * (x - 0.5) + 2 = 5 * (x - 0.4)
4x - 2 + 2 = 5x - 2
4x - 5x = -2+2-2
-x = -2
x = 2
2) 2 * (x - 0.3) = 4 * (x + 0.5) + 1.4
2x - 0.6 = 4x + 2 + 1.4
2x - 4x = 2 + 1.4 + 0.6
-2x = 4
x = -2
3) 2 * (-2) = -4
ответ: -4
Пошаговое объяснение:
1) 4 * (x - 0.5) + 2 = 5 * (x - 0.4)
4x - 2 + 2 = 5x - 2
4x - 5x = -2+2-2
-x = -2
x = 2
2) 2 * (x - 0.3) = 4 * (x + 0.5) + 1.4
2x - 0.6 = 4x + 2 + 1.4
2x - 4x = 2 + 1.4 + 0.6
-2x = 4
x = -2
3) 2 * (-2) = -4