Finding the length of a triangle using algebraic expression and perimeter - Online tutor

The video tutorial explains how to solve a word problem involving the lengths of a triangle's sides. The first side is twice the length of the second, and the third side is 7 more than the second. The teacher guides through drawing a diagram, assigning variables, setting up equations, and solving them to find the side lengths: 12.5, 25, and 19.5.

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