A four empty boxes " represented by [ ] ", between the horizontal boxes there s a "minus" sign, and between the vertical boxes there s a "positive sign", the first horizontal boxes equal 9, the second horizontal boxes equal 14, the first vertical boxes equal 12, the second vertical boxes equal 2, How can I fill the boxes with the right numbers.
[ ] - [ ] = 9
+ +
[ ] - [ ] = 14
= =
12 2
