SOLUTION: if 5x+y=9 and y=4x then x=

SOLUTION: if 5x+y=9 and y=4x then x=

Algebra.Com

Question 797397: if 5x+y=9 and y=4x then x=
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
5x+y=9
y=4x
--------
sub for y in the 1st equation

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