Write. and solve an equation to find the value of x ? #9 what does x = ?

Because you only have three out of the four sides with measurements, add those together which will give you 22.3. Then to find x all you have to do is subtract the perimeter’s value from 22.3.

Side note:
26-22.3=3.7

3.7=x

Ithink it should be 55.