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SIZIF [17.4K]
4 years ago
9

One third of a number is 12 less than the number itself

Mathematics
1 answer:
mote1985 [20]4 years ago
4 0
Let "n" be a substitute for "a number"

1/3(n)=n-12    Multiply by 3
n=3n-36         Get n onto the same side of the equation
2n=36            Divide by 2
n=18
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