(六分之五-十二分之五)×36
=30-15
=15
七分之一×34×7×十七分之二
=34*2/17
=4
20*2/5+5/6*1/5
=8+1/6
=8又6分之1
(8/9+3/4)*36
=32+27
=59
6分之73
59
1/6+2/3*3/7
=1/6+2/7
=7/42+12/42
=19/42
4/21*9/2-4/5*5/6
=6/7-2/3
=18/21-14/21
=4/21
(5/6-5/12)*36
=5/6*36-5/12*36
=30-15
=15
1/7*34*7*2/17
=(1/7*7)*(34*2/17)
=1*4
=4
20*2/5+5/6*1/5
=8+1/6
=8又1/6
(8/9+3/4)*36
=8/9*36+3/4*36
=32+27
=59