Verified answer

1)

-9x-5(14-2x)=7(2x-6)+5x

-9x-70+10x=14x-42+5x

-9x+10x-14x-5x=70-42

-18x=28

x=28/(-18)

x=14/(-9)

x= -1 ц. 5\9

2)4-7(-9х-3)=15-8(5-3х)

4+63x+21=15-40+24x

63x-24x=-4-21+15-40

39x=-50

x=(-50)/39

x= -1ц. 11/39