○ = 38-22= 16
So □ = 3
2.δ= 5,○ = 3,□ = 1。 The method is to replace δ in the other two formulas with ○ and □, and it is easy to get the result. These three formulas seem a bit complicated. ...
3. Similar to the previous question, if you replace □ with △, you will get △*△ = 4, so △= 2, and then □ = 6.
4. directly change △ into ○, then you get ○+○+○ = 28, that is, seven ○ = 28, then ○ = 4, so △ = 8.
I hope my answer is helpful to you ~O(∩_∩)O~
Come on, kids!