簡算:35分之48除19分之13加35分之22除19分之13
(48/35)/(13/19)+(22/35)/(13/19)
=(48/35+22/35)/(13/19)
=2/(13/19)
=38/13
簡算:48/35÷13/19+22/35÷13/19
=(48/35+22/35)÷13/19
=2×19/13
=38/13
=2又12/13
x:7/12=3/14(解方程)
x:7/12=3/14
x=7/12*3/14
x=1/8
x-12.7=13解方程
x=12.7+13