8n + 5 = 139

explain how to do this

8n + 5 = 139

You would re-Arrange it to make it

8n = 139 + 5

Then take minus five to make it look like

8n=134

Next step would be to divide

Divide 8 on both sides which would leave you with

N = 67 over 4

you will have to convert it if you don't want a fraction