Question 412131
solve a problem like X+Y=7 and 3X-y=5 how do i solve it then graph it please help thank you
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x+y = 7
3x-y = 5
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Solve the 2nd equation for "y":
y = 3x-5
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Substitute into the 1st equation and solve for "x":
x + 3x-5 = 7
4x = 12
x = 3
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Solve for "y":
y = 3x-5
y = 3*3-5
y = 4
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Cheers,
Stan H.
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