Question 379410
X+Y=3 
4x=5-y
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Rearrange:
y + x = 3
y +4x = 5
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Subtract the 1st from the 2nd and solve for "x":
3x = 2
x = 2/3
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Since y+x = 3, y = 3-(2/3) = 7/3
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Cheers,
Stan H.