Question 718701
5x + 7x = 90


12x = 90


x = 90/12


x = 15/2


x = 7.5


5x = 5*7.5 = 37.5


7x = 7*7.5 = 52.5


So the two angles are 37.5 degrees and 52.5 degrees


Therefore, the smaller angle is <font color="red">37.5 degrees</font>