Answer:
Bro it is too hard to find . Hope you understand me
Answer:
x+7
Step-by-step explanation:
Remove Parentheses
Collect like terms
Calculate
Answer:
9,240
Step-by-step explanation:
For the first number, there are 22 numbers available to choose from. For the second number, there are 21 numbers available, since the first number cannot be the same as the second number. And for the last number, there are 20 remaining numbers to choose from. So, there are 22*21*20=9240 possible sequences.