Решить подробно

-9 х-5 (14-2 х) = 7 (2 х-6) + 5 х

4-7 (-9 х-3) = 15-8 (5-3 х)

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 (-9 х-3) = 15-8 (5-3 х)

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

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

39x=-50

x = (-50) / 39

x = - 1 ц. 11/39