SOLUTION: please help me solve this: the perimeter is 84 meters, the length is 6 more than twice the width, what is the length and width

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Question 495102: please help me solve this: the perimeter is 84 meters, the length is 6 more than twice the width, what is the length and width
Answer by MathLover1(20855) About Me  (Show Source):
You can put this solution on YOUR website!

the perimeter is P=84m,
the length L is 6m more than twice the width W
L=2W%2B6m...........1
what is the length L and width W
P=2%28L%2BW%29
84m=2%28L%2BW%29
84m%2F2=L%2BW
42m=L%2BW........substitute L from 1
42m=2W%2B6m%2BW...solve for W

42m-6m=3W
36m=3W
36m%2F3=W
highlight%2812m=W%29
L=2W%2B6m...........1
L=2%2A12m%2B6m
L=24m%2B6m
highlight%28L=30m%29