The problem
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-4/10(-4--9)
Answer provided by our tutors
Subtracting from a negative number should be enclosed in parentheses, as in "-4-(-9)" rather than "-4--9", as the double minus sign can be misinterpreted. It is also good to suggest that solutions begin with 'a few steps' (click on the 'Options' tab) and then increase the number of steps as the additional steps are helpful rather than confusing.