SOLUTION: What is the solution to 3x+3y=15. 2x+6y=22

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Question 1009597: What is the solution to 3x+3y=15. 2x+6y=22

Found 2 solutions by Alan3354, addingup:
Answer by Alan3354(69443) (Show Source):
You can put this solution on YOUR website!
What is the solution to 3x+3y=15. 2x+6y=22
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Divide the 1st eqn by 3.
Divide the 2nd eqn by 2
Subtract.

Answer by addingup(3677) (Show Source):
You can put this solution on YOUR website!
3x+3y=15 Multiply both sides by 2: 6x+6y= 30
2x+6y=22 Multiply both sides by -3: -6x-18y= -66
Now add those numbers:
6x+6y= 30
+
-6x-18y= -66
_ _ -12y= -36
Divide both sides by -12:
y= 3 Now let's find x, let's use the first equation:
3x+3(3)= 15
3x+9= 15
3x= 6
x= 2 Now, to find out if we have the right answer, let's use these numbers in the second equation.
Check:
2(2)+6(3)= 22
4+18= 22
22= 22 We have the correct answer