Open Middle®
Directions: Using the digits 1 to 9 at most one time each, fill in the boxes so x = y.
Hint
What needs to happen for us to get to x = y in the last step?
Answer
There are many possible solutions including:
9.7x + 4.2y = 8.6x + 5.3y
1.2x + 8.9y = 3.4x + 6.7y
6.8x + 1.3y = 5.7x + 2.4y
Source: Arnav Gulati and Daniel Luevanos
9.7x + 4.2y = 8.6x + 5.3y
3.7x + 8.7y = 5.1x + 3.9y
21
Yes, I agree with all of your answers David.