minus 21
think of it as 12+9 which equals 21
then just whack a minus sign infront
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3 minus -9 is 12.
4 divided by 9 minus 1 divided 12?
Negative 12 minus 3 plus 9 is equal to -6
-12 - 3 = -15
32 minus the product of 9 and a number is 140 the answer is 12. 32-9x=140 9x=108 x=12