Решите уравнение:
5х-6(2х+7)=13-(х+1)
5x-12x-42=13-x-1
5x-12x+x=-1+13+42
-6x=54
x=-9
5x-18x+42=13-(x+1)
5x-18x+(x+1)=13-42
-12x+(x+1)=-29
(2x+1)=-17
2x=-17-1