Question 1203921
------------------------------------------------------------------------------------
A supplement of an angle has a measure of 20 more than three times its complement. 
Find the measure of the angle. (The original angle.)
------------------------------------------------------------------------------------


{{{180-x}}}, to be "a supplement of an angle x"


The description is potentially not clear.
Maybe to mean this:  {{{180-x=20+3(90-(180-x))}}}.

Solve and see what happens.
{{{180-x=20+3(x-90)}}}
{{{180-x=20+3x-270}}}
{{{180-20+270=4x}}}
{{{4x=430}}}
{{{x=107.5*degrees}}}-----------maybe.  In fact, this is not a complement of any angle!


If that is not what you hoped for then maybe you could make the correct change to the problem description.


Maybe you meant for this:  {{{180-x=20+3(90-x)}}}.
{{{180-x=20+270-3x}}}
{{{3x-x=20+270-180}}}
{{{2x=110}}}
{{{x=55*degrees}}}-------------this would make more sense.