5(x-1) - 4(x-2) = 105x - 5 - 4x + 8 = 10x + 3 = 10x = 7
7(x-9) - (3x+1) = 97x - 63 - 3x - 1 = 94x - 64 = 94x = 73x = 73/4
Ответ: x = 7, x = 73/4
5(x-1) - 4(x-2) = 10
5x - 5 - 4x + 8 = 10
x + 3 = 10
x = 7
7(x-9) - (3x+1) = 9
7x - 63 - 3x - 1 = 9
4x - 64 = 9
4x = 73
x = 73/4
Ответ: x = 7, x = 73/4