6又2分之一-3又8分之3-0.625怎么算 解方程;4x+10/7=10/7 0.27X3-6x=0.15 x-(9/2+7/3)=65/53

问题描述:

6又2分之一-3又8分之3-0.625怎么算 解方程;4x+10/7=10/7 0.27X3-6x=0.15 x-(9/2+7/3)=65/53

6又2分之一-3又8分之3-0.625=6+1/2-(3+3/8)-5/8=6+1/2-3-3/8-5/8=6-3+1/2-(3/8+5/8)=3+1/2-1=2+1/2=2又1/24x+10/7=10/74x=10/7-10/74x=0x=00.27X3-6x=0.15 0.81-6x=0.156x=0.81-0.156x=0.66x=0.11x-(9/2+7/3)=65/53...