If and find (2A – B).

1

If and verify that (A + B) = (B + A).

2

If and verify that (A + B) + C = A + (B+C).

4

Let and Find:

i. A + 2B

ii. B – 4c

iii. A – 2B + 3C

5

Let and Compute 5A – 3B + 4C.