Question

a greater then b by2 and b greater then c by 10 if a+b+c=130 (b+c)-a=?

Answer 1

a=b+2
c=b-10
(b+2)+b+(b-10)=130
3b-8=130
3b=130+8
3b=138
b=138/3
b=46
c=36
a=48
(b+c)-a=(46+36)-48
=82-48
=34