Question

Sendo a = a + b, B= a -b - c e C = a - b+c determine:
a) A-B=
b) C-A=
c) A-B-C=
d) (A+B)-C=
e) C-(A+B)=
f) B+(A-C)=

Answer 1

a)a+b)=21+20=41

b)A^1+B^1=21+20=41