Question

The perimeter of a triangle is 49 cm, one side is 7 cm more than the second side and 5 cm less than the third side. Find the three sides.

Answer 1

Hi there!

Your Answer :-

Let one side be x.

Another side be x-7.

Third side be x+5.

Perimeter = 49 cm.

Solving The Equation,

$\large\rm\red{x + x - 7 + x + 5 = 49}$

$\large\rm\green{3x - 2 = 49}$

$\large\rm\pink{3x = 51}$

$\large\rm\purple{x = 17}$

So,

The First Number = x = 17.

The Second Number = 17-7 = 10.

The Third Number = 17+5 = 22.