Question

Can some one give me a step by step with all the work and answer ??? 8n + 7 = 31

Answer 1

Well we are trying to isolate n to be alone.
So lets solve our equation step by step

first! subtract 7 from both sides
8n + 7 = 31
-7 = -7 it cancels out on the left hand side and you solve for the right.

second! now lets set up our equation once again
8n = 24

Third! Now we divide both sides by 8 to isolate n to be alone.
8n = 24
÷8 = ÷8 and the left side has n alone and 24 ÷ 8 = 3 sooooo...

fourth! lets set up what we have left
n = 3

So our answer is finally
n = 3

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Answer 2

I presume you're trying to find n, so first remove the 7 from each side.

8n + 7 -7 = 31-7
=> 8n = 24
Then divide both sides by 8, as you want only n

8n/8 = 24/8
n = 3