7x + 8 = 84 Subtract 8 from bith sides: 7x = 76 Divide both sides by 7: x = 76/7 = 10.8571428...
89
6 plus 7 plus 8 equals 6 plus 8 plus 7, what property is that?That is the associative property.
it is 28
144
144 9+7 = 16 and 9*16 = 144
4n/7 + 8 = 20 subtract 8 from each side: 4n/7 = 12 multiply each side by 7: 4n = 84 n = 21
If I am correct, 9 plus 7 equals 112.
As written, that is true. (7 - 1) + 8 = 7 - (1 + 8) is not true.
-8
144
7 + 3 - 8 = 2