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-3x+16y = 28

3(x-3y = 7)

Multiply the bottom equation by 3 then add both equations together in order to eliminate x:

7y = 49

y = 7

Substitute the value of y into the original to find the value of x:

So: x = 28 and y = 7

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Q: X-3y equals 7 -3x plus 16y equals 28?
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