II. Activities
A. Find the value of each expression,
1. if a = 3, then 3a =
2. if x = 7, then x+12 =
3. if b = -2, then 2b+3 =
B. Add/Subtract the following polynomials.
1. 5a + 9a =
2. 14x + 6x + 7x =
3. 13b - 30 + 5b =
4. 8m - 36m =
5. (18m - 16) + (11m - 12) =​