Don't know how to do it. i think i'm overthinking the

x = 65

Step-by-step explanation:

Triangle RST ~ Triangle XYZ  

Thus, angle T ~ angle Z  

Angles in a triangle (specifically triangle RST here) adds up to 180 degrees.  

Thus, we have:  

angle R + angle S + angle T = 180  

36 + 72 + T = 180  

T + 108 = 180  

T = 180 - 108  

T = 72  

Angle Z = angle T = 72 degrees  

Hence, we have:  

x + 7 = 72  

x = 72 - 7  

x = 65