Question

if two equal sides of a triangle are 5cm less than twice the third side the total perimeter of triangle was 55 find lengths of each side
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Answer 1

Let the third side be x

So,

Another side=2x-5

Since the another side is equal to this side...

Therefore another side=2x-5

Since perimeter=55m

therefore 3rd side=x+2x-5+2x-5=55

5x-10=55

5x=55+10

5x=65

therefore x=13m

since, x=13m

therefore another equal sides are 2x-5

therefore other equal sides are 21m