Respuesta :

musiclover10045
1/2 (116 +?) = 83

distribute the 1/2 by multiplying it by 116 and the ?
116 x 1/2 = 58
1/2 x ? = ?/2

 so yo now have:  58 + ?/2 = 83

subtract 58 from both sides:

?/2 = 25

multiply both sides by 2:

? = 25 *2

?=50 degrees