Excuse me, a question in the summer homework of mathematics in grade two of primary school? Delta delta = 33, delta = delta+delta, delta and delta respectively?
Solution: let ○=x and △ = y.
Then x+y=33 and x=2y.
So 2y+y=33
3y=33
y= 1 1
So x=2y=2* 1 1=22.
Answer: ○ stands for 22 and △ stands for 1 1.