The lengths of the sides of a triangle are y, y + 1, and 7 centimeters. If the perimeter is 56 centimeters,

what is the value of y?

what is the value of y?

**To find the perimeter of a triangle, simply add up the sides.**

y + y + 1 + 7 = 56 {added given sides and set equal to given perimeter}

2y + 8 = 56 {combined like terms}

2y = 48 {subtracted 8 from each side}

**y = 24**{divided each side by 2}

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