Dimensions 3

A perimeter of a rectangular field is 96 meters. The length is four meters less than three times the width. Find the length and width (its dimensions).

Correct answer:

a =  35 m
b =  13 m

Step-by-step explanation:

p=96 m  a=3 b4 2 (a+b)=p a=3 b4 2 (a+b)=96  a3b=4 2a+2b=96  Pivot:Row1Row2 2a+2b=96 a3b=4  Row221 Row1Row2 2a+2b=96 4b=52  b=452=13 a=2962b=2962 13=35  a=35 b=13

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