10/9-(1/3除以3+10/13)=10/9-(1/9+10/13)=10/9-1/9-10/13=9/9-10/13=1-10/13=3/13
9/10减(1/3除以3加13/10) =9/10-(1/9+13/10)=9/10-13/10-1/9=-2/5-1/9=-23/45
9分之10-(3分之1÷3+13分之10)=10/9-1/9+13/10=1+13/10=23/10(7/12-5/18)x12-2/3=7-10/3-2/3=7-12/3=7-4=3
9/10-(9/10-1/3)=9/10-9/10+1/3=1/3求采纳
10/9-1/9-10/13=1-10/13=3/13
9分之10-(3分之1除以3+13分之10) =10/9-[[1/3x[1/3]+10/13] =10/9-[1/9+10/13] =10/9-1/9-10/13 =1-10/13 =3/13
9/10÷(3/1÷3+13/10)=0.9÷(3+1.3)=0.9÷4.3=0.209302325581395
简便计算:10/9-(1/3÷3+10/13)=10/9-(1/9+10/13)=10/9-1/9-10/13=1-10/13=3/133/5+2/9+1/5÷1/2=(3/5+2/5)+2/9=1+2/9=1又2/9
九分之十减(三分之一除以三加十三分之十)=10/9-1/9-10/13=1-10/13=3/13
-9÷3+(1/2-2/3)*12*9=-3+(-1/6)*108=-3-18=-21