x-(1/3+3/8)=5/12
x-(1/3+3/8)+(1/3+3/8)=5/12+(1/3+3/8)
x=5/12+1/3+3/8
x=5/12+4/12+3/8
x=9/12+3/8
x=3/4+3/8
x=6/8+3/8
x=9/8
望采纳,谢谢
先算括号内的,再通分计算
1/3+3/8=17/24
x-17/24=5/12
x=17/24+10/24
x=27/24
原式=x=5/12+(8/24+9/24)
=5/12+17/24
=10/24+17/24
=27/24
=1.125
先通分:x-(8/24+9/24)=10/24
x-17/24=10/24
x=10/24+17/24
x=27/24
x=9/8