Question 1065722
If those are the two "acute" angles of a right triangle, then you know they are NOT the 90-degree angle.


The triangle has ONE 90 degree angle, and the sum of the two acute angles is  90 degrees;  90+90=180.


{{{2x-11+x+26=90}}}

{{{3x+15=90}}}

{{{x+5=30}}}

{{{highlight(x=25)}}}