递等式(1/2-1/3)X3/4除以百分之25+1/2X百分之50

问题描述:

递等式(1/2-1/3)X3/4除以百分之25+1/2X百分之50

(1/2-1/3)x3/4÷25%+1/2x50%
=1/6x3/4÷1/4+1/2x1/2
=1/2+1
=1½