Question

The second angle of a triangle is 15 less than twice the first angle.the third angle is 20 more than the second angle.find the three angles?

Answer 1

hi dear
this must be the answer
hope it helps

Answer 2

1 st angle =x
2 nd angle =2x-15
3 rd angle =2x-15+20

so,
x + 2x-15+2x-15+20=180
5x-10=180
5x=190
x=38
2x-15=61
2x-15+20=81