Help me with these two polynomials, please?

Question

Add 3a - 4 + a + 6

Subtract -3m + 1 - 2m - 6

thank you

Answer 1

Answer: 4a + 5m +7

3a - 4 + a + 6 = 4a + 2

-3m + 1 - 2m - 6 = -5m - 5

To subtract the second polynomial from the first, one must change signs and add. Addem together, and whaddayagot?

Answer 2

I do not see any relation with Chemistry but anyway:

(3a+a) = (6+4)
4a = 10
a = 10/4 = 5/2 = 2.5


(-3m -2m) = (6-1)
-5m = 5
m = -1