Question 357165
 solve the following system of equations 
x+5y= 8 
x= 5-5y 
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Rearrange:
x + 5y = 8
x + 5y = 5
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Assuming those x's and y's mean the same
in both equations you subtract and get:
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0 = 3
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The assumption was wrong.  There is no (x,y)
pair that satisfies both equations.
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Conclusion: No solution
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Cheers,
Stan H.