Начнем с открытия скобок:
(0.5x + 4) * 5 + 12.5x = 95;
0.5x * 5 + 4 * 5 + 12.5x = 95;
2.5x + 20 + 12.5x = 95;
2.5x + 12.5x = 95 - 20;
15x = 75;
x = 75 : 15;
x = 5.
Начнем с открытия скобок:
(0.5x + 4) * 5 + 12.5x = 95;
0.5x * 5 + 4 * 5 + 12.5x = 95;
2.5x + 20 + 12.5x = 95;
2.5x + 12.5x = 95 - 20;
15x = 75;
x = 75 : 15;
x = 5.