Answer:
5x+24
Step-by-step explanation:
Well first you add the like terms 2x+3x and you get 5x. After that you add 17+7 and get 24 so your answer should be 5x+24
#7 is 6/8 im not sure about #6
C) 9
54 = 2 x 3 x 3 x 3
81 = 3 x 3 x 3 x 3
common factor of 54 and 81 = 3 x 3 = 9
Answer: 9