Question

Is -15 less than -7 plz I need so much help

Answer 1

Yes! "-15" is less than "-7".

Both of these numbers are "negative numbers" ; and as such, a larger "negative number" will be less than a smaller "negative number".
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Answer 2

-15 is in fact less than -7. Here is a number line:

-15 -14 -13 -12 -11 -10 -9 -8 -7 -6 -5 -4 -3 -2 -1 0 1 2 3 4 5...

Let me know if you need clarification :)