Answer: x = 34
4x + 3 + x + 7 = 180
5x + 10 = 180
5x = 170
x = 34
4x + 3 = ?
4 (34) + 3 = ?
136 + 3 = 139
x + 7 = ?
(34) + 7 = 41
139 + 41 = 180
It gives you the sum of 180 degrees if they are both combined
