the angles sum to 180.
So, if the base is x, each of the other two sides is 2x-3.
SO, now you have to find x when
x + 2x-3 + 2x-3 = 44
Having found x, you can now determine the lengths of the sides.
Algebra: Measurement
One of the equal sides of an isosceles triangle is 3 m less than twice its base. The perimeter is 44 m. Find the lengths of the sides.
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