32*10分之3+1÷125%
=32×3/10+4/5
=48/5+4/5
=52/5
63*(7分子2-72分之1)-0.125
=63×2/7-63×1/72-1/8
=18-7/8-1/8
=18-1
=17
12.48:x=3分之1:4分之1
1/3x=12.48×1/4
1/3x=3.12
x=9.36
x-20%x=9分之2
80% x=2/9
x=5/18
3分之2x-5分之1x=1
(2/3-1/5)x=1
x=15/7
32*10分之3+1÷125%
=32×3/10+4/5
=48/5+4/5
=52/5
63*(7分子2-72分之1)-0.125
=63×2/7-63×1/72-1/8
=18-7/8-1/8
=18-1
=17
12.48:x=3分之1:4分之1
1/3x=12.48×1/4
1/3x=3.12
x=9.36
x-20%x=9分之2
80% x=2/9
x=5/18
3分之2x-5分之1x=1
(2/3-1/5)x=1
x=15/7