1 L = 1000ml
[tex]1.(10000ml-7000ml)* \frac{1L}{1000ml} =3000ml* \frac{1L}{1000ml} =3L \\ 2.(2000ml+9000ml)* \frac{1L}{1000ml} =11000ml* \frac{1L}{1000ml} =11L \\ 3.(6000ml-5000ml)* \frac{1L}{1000ml} =1000ml*\frac{1L}{1000ml} =1L \\ 4.(7000ml+3000ml)*\frac{1L}{1000ml} =10000*\frac{1L}{1000ml} =10L \\ 5.(5000ml+8000ml)*\frac{1L}{1000ml} =13000ml*\frac{1L}{1000ml} =13L[/tex]