Oh, dude, 9 minus a number is just 9 minus a number. Like, you didn't give me the number, so I can't really do the math for you. It's like trying to guess someone's age without any clues. So yeah, 9 minus a number equals 9 minus a number.
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27
2 times a number minus 17 plus 20 times a number minus 9 is the same as 2x - 17 + 20x - 9 = 22x - 26
Minus. You are multiplying a negative number a positive number of times. -3(2) -9
0
Sobtract 1 from minus 9 and get minus 10.