2 1/16-2/3*7/12 1. 2+1=3 +2 _1_ 32. 3/16=(3//16)3. 2/3=(2//3)4. (2//3)*7=(14//3)5. (14//3)/12=(7//18)6. (3//16)-(7//18)=-(29//144) 1/2*1 2/3:10 1. (1//2)*3/3:10 1.1. 1+2=3 +1 _2_ 32. (3//2)/3:10 2.1. (1//2)*3=(3//2)3. (1//2):10 3.1. (3//2)/3=(1//2)4. 1//20 4.1. (1//2):10=(1//20)