Question

The angles of a triangle are in the ratio 3:2:7.find each angle.
With statements.....

Answer 1

it is not positive and negative impact on the ratio of each angle 3;2;7

Answer 2

We know that the sum of angles of a triangle is 180 degrees ( AMS property )
So ,
if we consider "x" as the unknown angle 
then we get
3x + 2x + 7x = 180
12x = 180
x= 15 degrees

so the angles of the triangles are
3x=3(15)=    45 degrees
2x=2(15)=    30 degrees
7x=7(15)=  105 degrees