Simplify the following by combining like terms.

a) 7f+2f+8+4
b) 10x + 3x + 5y + 3y
c) 10+7q-3r + 2q -r
d) 11b - 3b^2 + 5b^2 - 2b

1 answer

a) 9f + 12

b) 13x + 8y

c) 9q -4r + 10

d) 6b - 3b^2