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View Full Version : How to solve with elimination, x+y=90, y=4x+15


CarolD22
Apr 13, 2010, 04:45 PM
Can anyone solve with elimination? Show work.
x+y=90
y=4x+15

ballengerb1
Apr 13, 2010, 05:00 PM
You take it in steps. Since you know what Y equals sub that into the first equation X+4X+15=90, that means 5X (take away 15 from both sides) = 75. Try the next step