Đáp án + Giải thích các bước giải:
`f)` `1/3+1/3:x=1`
`=>1/3:x=1-1/3`
`=>1/3:x=2/3`
`=>x=1/3:2/3`
`=>x=1/3*3/2=1/2`
Vậy `x = 1/2`
`g)` `x:3/4+1/4=-2/3`
`=>x:3/4=-2/3-1/4`
`=>x:3/4=-8/12-3/12=-11/12`
`=>x=(-11/12)*3/4`
`=>x=-11/16`
Vậy `x = -11/16`
`h)` `x:(1/2+1/3)=6/5`
`=>x:(3/6+2/6)=6/5`
`=>x:5/6=6/5`
`=>x=6/5*5/6=1`
Vậy `x = 1`
`i)` `3(x-1/2)-5(x+3/5)=-x+1/5`
`=>3x-3/2-5x-3+x-1/5=0`
`=>(3x-5x+x)+(-3/2-3-1/5)=0`
`=>-x+(-15/10-30/10-2/10)=0`
`=>-x-47/10=0`
`=>-x=47/10`
`=>x=-47/10`
Vậy `x = -47/10`.
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