Question

The sum of a number and three is less than twelve
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Answer 1

The equation is x+3<12

The answer is x<9

Explanation:

(The sum of a number = x) (and = +) (three is less than twelve = 3<12)

This means the equation is x+3<12, so then you subtract 3 from both sides and end up with x<9

Hope this helps :)