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you pick any # for x or y and work from there

ex. x=-5 now the question is 3(-5)+5y=15

multiply 3 and -5 to get -15

add 15 to both sides and the question is now 5y=30

divide both sides by 5 and the answer is y=6

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Q: How do you graph 3x plus 5y equals 15?
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