He might not have taken the product of (-) *(-) to + and that is why he got wrong answer.
What is Difference ?
Difference is the output of the mathematical operation Subtraction.
It is given that
the difference -11-(-4) = -15
The difference of -11 - (-4) = -11 +4 = -7
He might not have taken the product of (-) *(-) to + and that is why he got wrong answer.
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