Question

In a triangle abc angle a=y, angle b=(y-9), angle c=x. also angle b - angle c =48. find three angles.

Answer 1

y-9-x=48
y-x=57
x=y-57
y+y-9+x=180
2y+x=189
2y+y-57=189
3y=246
y=246/3
y=82
x=25