Triangle plus triangle equals circle plus circle plus circle, triangle plus circle equals 18

Triangle plus triangle equals circle plus circle plus circle, triangle plus circle equals 18

△+△=○+○+○+○
Then a △ is equal to two zero, that is, △ is equal to two zero
And △ 0 = 18
Therefore, 2 + 0 = 18
0 = 6, then △ = 12
That is, the number represented by △ is 12, and the number represented by ○ is 6