Question

-7(2x-3)-8(4x+5)=7x-3(2x+5)

Answer 1

раскроем скобки
-14x+21-32x-40 = 7x-6x-15
-47x-4 = 0
47x+4 = 0
47x = -4
x = 4
47

Answer 2

-7(2x-3)-8(4x+5)=7x-3(2x+5)
-14х+21-32х-40=7х-6х-15
-14х-32х-7х+6х=-15+40-21
-47х=4
х=-4/47