Question

The perimeter of a square is equal to the perimeter of an equilateral triangle. The length of a side of the square is given by x, and the length of a side of the equilateral triangle is given by x + 1. Which equation can be used to find the value of x?

x = 3 (x + 1)
3 x = 4 (x + 1)
4 x = 3 (x + 1)
x = x + 1

Answer 1

4x=3(x+1)

Explanation:

Answer 2

perimeter of square =4x

4x=equilateral triangle perimeter

4x=3.1

x=3/4