Решите уравение(7x+1)(5x+3)=7x+1
33x + 21x + 5x + 3 =7x +1 33x + 21x + 5x - 7x = 1 - 3 52x = -2 /52 x = -2/52 x = -1/26
7х+1+5х+3=7х+1 7х-7х+5х=-1+1-3 5х=-3 х=-3:5 х=0,6