Question 659727
Supplementary angles add to 180.  Call the angles x and y.  x+y=180<P>
x = 4y-3 (three less than 4 times y).  Substitute this for x into the first equation and solve it.<P>
4y-3+y = 180<P>
5y = 183<P>
y=36.6<P>
x = 180-36.6 = 143.4