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algebra 1

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Solve by substitution.
y=.8x+72
20x+32y=48

How do you get y? i got the x part but i can't seem to get the y part.

  • algebra 1 -

    solve this:
    20x+32 (.8x+72)=48
    then, you have x. Then solve y=.8x+72

  • algebra 1 -

    i actually wrote the second part wrong. Its supposed to be y=.8x+7.2 not 72. and when i solved it i got 10.4 for y and my x is 4.

  • algebra 1 -

    Is it right?

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