Question

РЕШИТЕ СРОЧНО!!
1) 5(2-5х)-7(4х-1) =6х
2)2(8х-1)-8(2х-3) =13
3)7(2х+3)+х=4х-12
4)4 (5х-1) =3х+13
5)2 (4х+3)-5х=3
6)9+2(7х+6)=5х+12