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Arlecino [84]
3 years ago
8

Why is 9 -1is 8 can some one help me because i dont understand why is not 10

Mathematics
2 answers:
xenn [34]3 years ago
4 0
Its 8 because your not adding your subtracting.
SashulF [63]3 years ago
3 0
Ah, the dash, this thing, - means subtraction, which is the opposite of addition, and takes away numbers. Meaning 9-1 is 9, but you count down by 1 rather than up one.
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