SOLUTION: solve using the addition method,answer must be an ordered pair. -2x=2y+5 6x+3y=3

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Question 147165: solve using the addition method,answer must be an ordered pair.
-2x=2y+5
6x+3y=3
Answer by mangopeeler07(462) About Me  (Show Source):
You can put this solution on YOUR website!
Choose a variable to solve for first. How about y? Line up the two equations and multiply -2x=2y%2B5 by three. Then manipulate the second equation into 6x=-3y%2B3 by subtracting 3y from both sides. Once this is done, you should have -6x=6y%2B15 and 6x=-3y%2B3. Add them together and get 0=3y%2B18. Subtract 18 from both sides and get -18=3y. Divide both sides by three and get y=-6. Then plug y back into the original equation -2x=2y%2B5 and solve for x. -2x=-12%2B5 after plugging in y, and get -2x=-7. Divide each side by -2 and get x=7%2F2. You wanna check? Plug x and y into 6x%2B3y%2B3. Get 21-18=3. It's true! So y=-6 and x=7/2.