If you mean: y = 4x-2 and y = x+13 then x = 5 and y = 18
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If 5x plus 3y equals 13, the x equals 2 and y equals 1. This is because 5x2=10 and 3x1=3, and 10+3=13.
13
13
If you mean: x+7y = 7 and 2x+y = 8 Then by substitution: x = 49/13 and y = 6/13
It would be (13, 47).