Asked by rachel

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.
Answered by bobpursley
solve this:
20x+32 (.8x+72)=48
then, you have x. Then solve y=.8x+72
Answered by rachel
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.
Answered by rachel
Is it right?
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