−7+ ? +[(8⋅m)⋅18] Commutative Property of Addition
? +[(8⋅m)⋅1/8] Inverse Property of Addition
-7 + ? +[(8⋅m)⋅18] + ? +[(8⋅m)⋅1/8]
Using the commutative property of addition, we can rearrange the terms to simplify the expression:
-7 + ? + ? +[(8⋅m)⋅18] +[(8⋅m)⋅1/8]
Now, using the inverse property of addition, we can find the value that needs to be added to -7 to get a sum of 0:
-7 + 7 + ? + ? +[(8⋅m)⋅18] +[(8⋅m)⋅1/8]
Therefore, the missing value is 7.