Question

The length of each side of an equilateral triangle is increased by 5 in, so the perimeter is now 60 in.

Answer 1

(x+5)+(x+5)+(x+5)=60
3x+15=60
3x=45
x=15.
before 5 was added to each side, each side was 10 in, and now each side is 15 in.
because x is the original side lengths and we added 5 to each side.
combine like terms and solve for x.

Answer 2

The answer origanlly would of been 65