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Katena32 [7]
3 years ago
10

The length of a rectangle is three more than its width. The perimeter is 86cm. Find the length and width of the rectangle. Write

an equation and solve
Mathematics
1 answer:
elena-s [515]3 years ago
5 0
P=2(l+w)
Substitute width plus 3 for length
Remember order of operations: multiply before adding

86=2((w+3) + w)
86=2w+6+2w
86=4w+6
80=4w
20=w
23=w+3=l

Check the answer
86=2((w+3) + w)
86=2((20+3)+20
86=2(23+20)
86=46+40
86=86
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