Question 385354
solve the following by method of substitution: 
{3x-2y=13
{x+y=1
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Solve the 2nd equation for "x":
x = 1-y
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Substitute that value of "x" into the 1st equation
and solve for "y":
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3(1-y) -2y = 13
3-3y-2y = 13
-5y = 10
y = -2
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Since x = 1-y, x = 1--2 = 3
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Solution (3,-2)
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Cheers,
Stan H.