Question

If a= 2a-3b+c, b=3a+2b+3 c and c=a+b+c, then find a+b-c.

Answer 1

Answer=

6a+2c+3

Solution -2a−3b+c+3a+2b+3+a+b+c

2a−3b+c+3a+2b+3+a+b+c=2a+−3b+c+3a+2b+3+a+b+c

Combine Like Terms:

=2a+−3b+c+3a+2b+3+a+b+c

=2a+−3b+c+3a+2b+3+a+b+c=(2a+3a+a)+(−3b+2b+b)+(c+c)+(3)

=6a+2c+3