Question

Find he value of x please and thank you I really appreciate it

Answer 1

As the sides shown are same so the base of large triangle is double the base of smaller triangle

so,

2(2x-8)=20

distributing 2 over bracket,

4x-16=20

adding 16 to the other side

4x=20+16

4x=36

dividing by 4 on the right side

x=9