Respuesta :

Step-by-step explanation:

4.

22+4x= 90

4x=90-22

4x=68

x°=17°

7.

(x-5)°+29°=180°

x-5+29=180

x= 180-24

x=156°

10.

(x+3)°+49°=90°

x= 90-52°

x=38°