What's the number in the green box

Kinda confusing but, I think it is

a=7

b=9

c=19

d=7

sorry it took a while it was confusing and plz give brainliest

Step-by-step explanation:

Step-by-step explanation:

Given : Empty Boxes with  addition / subtraction  and their ouput

To find : numbers in boxes full filling the given conditions

Let assume left  top corner number = a

now  Right   top corner would be = 16 - a

Left   bottom corner would  = 26  - a

Let assume bottom right corner = b

=> 16 - a  + b = 16

=> b = a

also

26 - a  - b = 12

=> a + b = 14

while a = b

=> 2a = 2b = 14

=> a = b = 8.0

16 - a = 8.0

13 - a = 20.0

+             +

answer: i think the answer is etheir c or d but i don't know which one but have a good day!

step-by-step explanation: