7 + 7 + 8 = 22
6 plus 7 plus 8 equals 6 plus 8 plus 7, what property is that?That is the associative property.
If you mean: 6*(7+8)*(6+7)+8 then it works out as 1178
16 + 2 + 9 + 4 + 7 + 8 is = 18 + 9 + 4 + 7 + 8 = 27 + 4 + 7 + 8 = 31 + 7 + 8 = 38 + 8 = 46
8
8 + 7 + 3 - 8 = 10
8 plus 7 is 15. 15 plus 6 is 21. :)
5 + 7 + 8 = 20
No. 2 + 7 - 8 = 1 8 + 7 - 2 = 13
9 + 4 + 7 + 8 = 28
7 + 8 + 32 + 178905 = 178,952
As written, that is true. (7 - 1) + 8 = 7 - (1 + 8) is not true.