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To solve this equation, we can represent it as x < 12 and x = -31. However, since x cannot be both less than 12 and equal to -31 simultaneously, there is no solution to this equation. In mathematical terms, this would be considered an inconsistent equation, as it does not have a valid solution within the given parameters.
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x-5=7 12-5=7
4 x 3 = 12, 12 - 4 = 8, the answer is 4
The number is less than 4.
It is: 19-7 = 12