What is the missing number?

?= 11

Take the numbers from lower right triangle.

for first square it is 2+3+2= 7 For second, 4+1+3=8 Hence for third it will be 6+2+3=11

So, ?=11

19 is the solution (6*2)-(2+3)=7 (2*4)-(3+1)=4 (4*6)-(3+2)=19

2+6+2-3=7; 4+2+3-1=8; :.,6+4+3-2=11

What is the missing number ?