Which is the correct algebraic expression after combining like terms?

6cd+3c-7d-3cd+4d+1/3c

a) 3cd+2 2/3c-11d

b) 3cd+3 1/3c-3d

c) 9cd+2 2/3c-3d

d) 9cd+3 1/3c-3d

b) 3cd+3 1/3c-3d

Step-by-step explanation:

It can work well to factor the variables out so you can see the coefficients more easily:

6cd+3c-7d-3cd+4d+1/3c

= (6 - 3) cd + (3 + 1/3) c + (-7 + 4) d

= 3cd + (3 1/3) c - 3d

b

Step-by-step explanation:

i took the test on Edge and i got it right