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1/2
4x+10/7=10/7
4x=10/7-10/7
4x=0
x=0
0.27X3-6x=0.15
0.81-6x=0.15
6x=0.81-0.15
6x=0.66
x=0.11
x-(9/2+7/3）=65/53
x-(4+1/2+2+1/3）=65/53
x-(6+3/6+2/6）=65/53
x-(6+5/6)=1+12/53
x=1+12/53+6+5/6
x=7+12/53+5/6
x=7+72/318+265/318
x=7+337/318
x=7+1+19/318
x=8+19/318
x=8又19/318