Answer:
12c - 9d + 3
Explanation:
(9 c − 8 d ) + ( 2 c − 6 ) + ( − d + 3 )
Combine like terms ( the d's with the d's, the c's with the c's and the numbers without the variables with the number w.out the variables)
9c - 8d + 3c - 6 - d + 3
12c - 9d + 3
That is at it's simplest form
Hope this helped!
have a supercalifragilisticexpialdocious day!