MioNeedsHelp MioNeedsHelp 25-08-2022 Mathematics contestada Determine whether the expressions are equal. Select Equal or Not Equal for each pair of expressions. (-7)+(-7) and 7+7 21+ (-8) and (-8) +21 (-13) + 13 and (-9) +9 2+(-10) and (-3) + (-5) 9+(-5) and (-9) + 5