Question

6x - 9 = 27

5 - 4x = - 15

Answer 1

x = 6 and x = -5

Explanation:

6x - 9 = 27

Moving -9 to the right makes it positive (- - = +)

6x = 27 + 9

27 + 9 = 36

6x = 36

The 6 is multiplied by something to make 36, so you must divide the 36 by 6

36 / 6 = 6

x = 6

5 - 4x = -15

Move the (+)5 to the right, making it negative ( + - = -)

4x = -15 -5

-15 - 5 = -20

4x = -20

-20/4 = -5

x = -5

Answer 2

`{ \boxed{ \tt{6x - 9 = 27}}} \\ { \tt{6x = 36}} \\ { \tt{x = 6}}`

`{ \boxed{ \tt{5 - 4x = - 15}}} \\ { \tt{4x = 5 + 15}} \\ { \tt{4x = 20}} \\ { \tt{x = 5}}`