`e)3/(x+3)+2/9-5/(x+3)=7/6(x\ne-3)`

`2/9-2/(x+3)=7/6`

`2/(x+3)=2/9-7/6`

`2/(x+3)=-17/18`

`-17(x+3)=2*18`

`-17x-51=36`

`-17x=36+51`

`-17x=87`

`x=-87/17(tm)`

Vậy: `x=-87/17`

`f)(x+7)/x+(2-x)/9=(-3)/15+7/x(x\ne0)`

`(x+7)/x-7/x=-1/5-(2-x)/9`

`(x+7-7)/x=(x-2)/9-1/5`

`1=(x-2)/9-1/5`

`45=5(x-2)-9`

`5x-10-9=45`

`5x=45+19`

`5x=64`

`x=64/5(tm)`

Vậy: `x=64/5`  

`g)7/(x+2)-2/(2x+4)=(-4)/15+5/(3x+6)(x\ne-2)`

`7/(x+2)-2/(2(x+2))=(-4)/15+5/(3(x+2))`

`7/(x+2)-1/(x+2)=(-4)/15+5/(3(x+2))`

`6/(x+2)=(-4)/15+5/(3(x+2))`

`6=-4/15(x+2)+5/3`

`90=-4(x+2)+25`

`-4x-8+25=90`

`-4x+17=90`

`4x=17-90`

`4x=-73`

`x=-73/4(tm)`

Vậy; `...`