so you have like a lower limit minimum cut using the numbers on the left and an upper limit minimum cut using the values on the right.
remember only add the numbers where edge is flowing from the source to the sink.
lower limit flow: 1 + 3 + 3 + 2 + 4 + 3 + 3
Upper limit flow: 4 + 6 +6 +8 +9 +6 +6
that should be correct from what my teacher told me in class. I'm doing standard maths this year as well so I'm new to networks too. Do you have the answers so you can check that its right?
Also If you want a quicker response I recommend atar notes there's more people viewing that site and the moderators are always really quick to help.