0.63+4.37/(2又3分之2-1又9分之4)
问题描述:
0.63+4.37/(2又3分之2-1又9分之4)
答
=0.63+4.37/(8/3-13/9)
=0.63+4.37/(11/9)
=0.63+4.37*9/11
=63/100+3933/1100
=4626/1100
=2313/550