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How to solve substitution

Asked Jan 6, 2009, 08:48 PM — 1 Answer
2x-3=-y
3x+5y=2

1 Answer
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ISneezeFunny Posts: 4,186, Reputation: 4188
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#2

Jan 6, 2009, 09:01 PM
2x - 3 = -y

Multiply the entire thing by (-1)

Y = 3 - 2x

Substitute into second equation

3x + 5(3 - 2x) = 2

3x + 15 - 10x = 2

You can solve the rest.
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