3x + 7x = 10x50(x - 63) + 15 = 24950x - 315 + 15 = 24950x - 300 = 24950x = 549x = 549 / 50x = 10.98
Ответ: x = 10.98
3x + 7x = 10x
50(x - 63) + 15 = 249
50x - 315 + 15 = 249
50x - 300 = 249
50x = 549
x = 549 / 50
x = 10.98
Ответ: x = 10.98