a-b+c=3 a+b+c=3 4a+2b+c=6 a=?b=?c=?

a-b+c=3 a+b+c=3 4a+2b+c=6 a=?b=?c=?

a-b+c=3
a+b+c=3
Subtraction: 2B = 0, B = 0
a+c=3
4a+c=6
Subtraction: 3A = 3, a = 1
a+c=3 c=3-a=3-1=2