Google Apps Script for Google Sheets Pulling Formulas from Master to Several Slave Sheets

I have sample spreadsheets which would make this very easy for you to solve but Excel Forum won't let me post any links yet.

I need help with ONE FORMULA or ONE SMALL SIMPLE SCRIPT in Google Sheets to solve this spreadsheet problem.

I have a master spreadsheet with all my formulas in a row.

I want to have many slave spreadsheets pulling the formulas in via IMPORTRANGE.

So if I need to change a formula I can change it only in the master and it will propagate.

Problem is IMPORTRANGE only imports values. not formulas.

I can import the formulas as text strings without the equal sign from the master to the slave. So now I have a row of all the text of the formulas, but I can't seem to reference those cells to then build the formulas and have Google Sheets recognize them as formulas instead of text strings.

I tried to combine equal sign and the cell with the formula text:

="="&[cell reference with formula as text only without an equal sign]

the result is the correct text:

=[my formula]

but Google Sheets does not recognize it AS a formula. It is just showing it as text!

How can I have a master sheet of formulas to be used in many slave sheets through importrange? Can I do it without a script?

And, can a moderator allow me to post some links to my Google Sheets so people can help me? It's very important for me to solve this ASAP for work.

I read on a forum that:

"It's possible to do this with Google Apps Script. Use the getFormula / setFormula for single formulas and getFormulas / setFormulas for formulas in a range."