Answer:
3x - 6 = x + 9
2x - 6 = 9
2x = 15
x = 7.5
Step-by-step explanation:
I don't know, but you could look it up on khan academy.
Answer:
3x +12
Step-by-step explanation:
The answer would be 7(a - 1)
Answer:
Since there are 72 cards in a set, then Kareem needs to collect a total of 15×72=1080 cards. Since Kareem currently has 216 role-playing game cards, subtract 1080 by 216 to find how many more he needs:
1080−216=864
Step-by-step explanation: