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.