Answer:
x = 8
Step-by-step explanation:
x + 3y + 1 -3x - 3y = -15 (+3y will eliminate -3y)
-2x + 1 = -15
-2x = -16
x = 8
Answer: x = 7 y = -2
Step-by-step explanation:
Assuming you meant x + 3y= 1 and -3x - 3y = -15.
Take the first eq and solve it to x= 1 - 3y. Then take that into the 2nd eq.
-3(1 - 3y) - 3y = -15
-3 + 9y -3y = -15
-3 + 6y = -15
6y = -12
y = -2
Take that into first eq
X + 3(-2) = 1
X + -6 = 1
X = 7
(7, -2) is the answer
