anonymous
  • anonymous
systems of equations : 4x+5y=48 y=3x+2 i keep getting fractions for my answer. i dont get it!!?!?!?!
Mathematics
jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
use substitution...plug in 3x+2 for the y in the first equation. Whenever you plug in something like that always put parenthesis around it. I'm guessing that you are forgetting to distribute the 5 with the 2. If you do you'll get 4x + 15x+10 =48 which gives you x=2 after a little more algebra. plug that into the second equation to get y with no fractions
anonymous
  • anonymous
4x + 5(3x+2) = 48 is what it looks like before you distribute
anonymous
  • anonymous
i did forget to distribute.

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