Упрощаем выражение:
19.4x - 4.3 + 20.6x = 19.4x + 20.6x - 4.3 = x(19.4 + 20.6) - 4.3 = 40x - 4.3;
x = 2.6;
40 * 2.6 - 4.3 = 104 - 4.3 = 99.7.
Упрощаем выражение:
19.4x - 4.3 + 20.6x = 19.4x + 20.6x - 4.3 = x(19.4 + 20.6) - 4.3 = 40x - 4.3;
x = 2.6;
40 * 2.6 - 4.3 = 104 - 4.3 = 99.7.