Question

Calculate b+2c=1 ; a+c=0 ; -b-c=0

Answer 1

b+2c=1,------ (eqn 1)

-b-c=0 --> b= -c

Substitute b= -c in eqn 1

(-c)+2c=1

a=-c---- a=-1

b=-c-----b=-1

c=1