Question 523971
let's call the 1st angle X, so the 2nd angle would be equal to 10+3X.
the 3rd angle is equal to 10+3X+X which is 10+4x.
the total measure of the 3 angles of a triangle is 180 degree.
so we can write X+10+3X+10+4X=180.
okay we have an equation now, let's solve for "X"
8X+20=180(subtract both side by 20)
8X=160(divide both side by 8)
X=20 (1st angle)
10+3(20)=70 (2nd angle)
10+4(20)=90 (3rd angle)