Question

3) (18-3y)-(2y + 12) = 16
4) 9- 4x = 5(2-x) + 78
5)-(6y-10) = 8y + (3-7y)
6) 4(-4z + 6) = 29-2(7z-3)
Пожалуйста помогитееее​

Answer 1

(18 - 3y) - (2y + 12) = 16

18 - 3y - 2y - 12 = 16

3y = -6

y = -2

9 - 4x = 5(2 - x) + 78

9 - 4x = 10 - 5x + 78

-x = 79

x = -79

-(6y - 10) = 8y + (3 - 7y)

-6y + 10 = 8y + 3 - 7y

y = -1

4(-4z + 6) = 29 - 2(7z - 3)

-16z + 24 = 29 - 14z + 6

-2z = 11

z = -11/2