8(7x - 3) = -48(3x + 2)
56x - 24 = -144x - 96
56x + 144x = -96 + 24
200x = -72
$$x = \frac{-72}{200} = \frac{-36}{100} = -0.36$$
Ответ: x = -0.36
4,5(8x + 20) = 6(6x + 15)
36x + 90 = 36x + 90
36x - 36x = 90 - 90
0 = 0
Ответ: x - любое число