- 8 + 17 = 9 =========
You need to add 17. x+-9=8 Add nine to each side x+-9=8 +9 +9 -9+9=0 so nine cancels out. 8+9=17 so now you have: x=17 Now you have the value of x.
27
9
9
1-9
9 and 9
89
8/9 + 3/9 + 2/9 = 13/9 = 1 4/9
The two numbers are 1 and -9
9 and 8 if you add them.
the three numbers add up 9 + 10 + 8 = 27then divide by that three so27 / 3 = 9making 9 the average.