Question 126725
2x+10, x, (2x+10-10) are the three angles.
2x+10+x+2x+10-10=180
5x=180-10
5x=170
x=170/5
x=34 degrees for the second angle.
2*34+10=68+10=78 degrees for the first angle.
2*34+10-10=68 degrees for the third angle.
PROOF: 
34+78+68=180
180=180