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zaharov [31]
3 years ago
15

How can 9+3 =12 help you solve 12-9?

Mathematics
2 answers:
Dovator [93]3 years ago
7 0
9+3=12, 12-9=3, since those three numbers are in the first equation.
d1i1m1o1n [39]3 years ago
3 0
Well you know that 9+3=12 so you can reverse it and do 12-9=3 .Because 3 is the only one left in the equation of 9+3=12.
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