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The perimeter of a pool table is about 7.8m. Four times the length equals nine times the width. What are the dimensions?

I need to find 2 equations first.
I got 2l + 2w= 7.8

I cant seem to get the other one

1 answer

4l=9w is the other equation

the dimensions should be
l=2.7
w=1.2

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