Question

Quadrilateral EFGH is a square. What is the value of x?

Answer 1

x=4

Explanation:

as it's an equilateral each side will equal the same so the 12x will be the same as 10x+8

12x=10x+8

2x=8

x=4

if u substitute x into each equation

12×4=48

10×4+8=48

they equal the same

so x=4