{{ item.displayTitle }}
navigate_next
No history yet!
Progress & Statistics equalizer Progress expand_more
Student
navigate_next
Teacher
navigate_next
{{ filterOption.label }}
{{ item.displayTitle }}
{{ item.subject.displayTitle }}
arrow_forward
If there's a negative in front of a difference, the expression can be rewritten by remove the parentheses, change signs, and rearrange the terms as follows. $\text{-}(9-x)=\text{-} 9+x=x-9$ All this can be done in a single step.