The perimeter of a triangle is 76 cm. Side a of the triangle is twice as long as side b. Side c is 1 cm longer than side a. Find the length of each side.

Let side B = X

Then side A = 2x

Side C = 2x + 1

Mow you have x + 2x + 2x+1 = 76

Simplify:

5x + 1 = 76

Subtract 1 from both sides:

5x = 75

divide both sides by 5:

x = 75 / 5

x = 15

Side A = 2x = 2*15 = 30 cm

Side B = x = 15 cm

Side C = 2x + 1 = 2*15 + 1 = 30+1 = 31 cm