Answer:
6
Step-by-step explanation:
6(2) = 12
12 + 9 = 21
21/3 = 7
7 - 1 = 6 <--- Number that's she's thinking
I tested every number!
The number line M-N is from 0 - 9.
2/3 of the way will be the same as 9 x 2/3
That equals 18/3 which reduces to 6.
6 is the coord 2/3 across the numberline from 0 to 9.
128