Directions: Using the digits 1 to 9 at most one time each, fill in the boxes to create two expressions that are equivalent to one another.

### Hint

What values will make the constants equivalent? What values will make the variable terms equivalent?

### Answer

Here are some possibilities:

1x + 2x + 9 + 3x = 4 + 6x + 5;

1x + 2x + 8 + 4x = 3 + 7x + 5

1x + 2x + 9 + 3x = 4 + 6x + 5;

1x + 2x + 8 + 4x = 3 + 7x + 5

Source: Will Case

answer 3x+2x+8+4x=1+9x+7

8x+5x+2+4x=4+5x+9

good

Answer: 1x+2x+3+1x=4x+3