Answer:
(-1,3)
Explanation:
3x + 6y = 15
6x + 6y = 12 Subtract
-3x = 3 Divide by 3
-x = 1 multiply by - 1
x = - 1
3(-1) + 6y = 15
-3 + 6y = 15 Add 3 to both sides
-3+3 + 6y = 15 + 3
6y = 18 Divide by 6
y = 18/6
y = 3
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