Решить уравнение 5х+3=7х-5(2х+1)
5x + 3 = 7x -5 (2x+1) 5x + 3 = 7x - 10x - 5 5x + 3 - 7x + 10x + 5 = 0 8x + 8 = 0 8x = -8 x = -1