George M. answered 01/14/21
Experienced College and High School Tutor Specializing in Algebra
Short side = X
2nd side = 2X+6
3rd side = X+13
Perimeter = 59
Solve for X by adding all the three side.
X + 2X+6 + X+13 = 59
4X+19 = 59
4X = 40
X=10
Now we know the value of X, we can solve and find length of the other two sides.
2(10)+6=26
(10)+13=23
and finally to check your answer, add all the sides and should give you a perimeter of 59