Question 219617
The perimeter of a triangle is found by adding the lengths of the three sides
The sum of three unknown consecutive integers can be expressed:
{{{x+(x+1)+(x+2) = 42}}}
{{{3x+3 = 42}}} Subtract 3 from both sides.
{{{3x = 39}}} Divide both sides by 3.
{{{x = 13}}} and...
{{{x+1 = 14}}} and...
{{{x+2 = 15}}}
The lengths of the three sides are:
13 inches, 14 inches, and 15 inches.