3x-9 = -18

3x + 6y=27 substitution problem

Solve for x in the first equation then use it in the second one to solve for y

x = - 3

y = 6

Step-by-step explanation:

3x-9 = - 18 - -> 3x = - 9 - -> x = - 9/3 - -> x = - 3

3 (-3) + 6y=27 - -> - 9+6y=27 - -> 6y=36 - -> y=36/6 - -> y=6

x = - 3 y = 6