Two supplementary angles will always add up to 180 degrees, so we can let x equal one of the angles which will make the other angle 35x. If we add them together...
35x + x = 180 36x = 180 x = 180/36 x = 5
The first angle is 5 degrees.
The second angle is 35x, so 35×5 = 175 degrees.
Check by adding them together and they should add up to 180.
