9х(8+12):(4+2)=30
9х8+12:(4+2)=74
(9х8+12):4+2=23
9х(8+12:4)+2=47
9*8+12:(4+2)=74
(9*8+12):4+2=23
9*(8+12):4+2=47
9х(8+12):(4+2)=30
9х8+12:(4+2)=74
(9х8+12):4+2=23
9х(8+12:4)+2=47
9х(8+12):(4+2)=30
9*8+12:(4+2)=74
(9*8+12):4+2=23
9*(8+12):4+2=47