This is the the question
an office manager spent $650 on a new energy-saving copier that will reduce the
monthly electric bill for the office from $112 to $88. in how many months will the
copier pay for itself?

i just need putting what number goes where as an algebraic equation

First, we need to know how much is saved per month. We know that the old monthly bill was $112, and that the new one is $88. By taking the difference, we will find the savings.

$112-$88=$24

So, the manager saves $24 per month.

One month goes by, and the manager saves $24.

24*1=24

Two months go by, and the manager has saved $48.

24*2=48

X months go by, and the manager has saved $650 or more.

24*X=650

Solve for X

X=650/24

650/24 is a little over 27, so we put 27 into the equation for X and see what we get.

24*27=648

In 27 months, the manager will have saved just under $650, so in 28 months, he will have saved the cost of the copier.

It’s hard to understand what you put.. can you show a picture ?