Plus minus symbol

I'm new to Excel (for mac) and need some help urgently!

I'm doing data organization for a research project. This includes a single workbook with about 22 spreadsheets in it. I am currently making a Master Table from values calculated in these different sheets.

The issue I have is that I want to link these values and place a ± sign in between them (ex. 75±4.5)

I know to add an = sign and select the cell I want to link, however I can't seem to add the ± symbol after or another link to another cell.

PLEASE HELP!!!

and thank you in advance

Try this...

=A1&CHAR(177)&B1

YES!!! Thank you all so so much :D

One more question, how can I reduce the number of decimal points that appear in the cell?

3 numbers after the decimal

This is my function... =ALK_ALT_CPK!M27&CHAR(177)&ALK_ALT_CPK!M28

Assuming it's the ALK_ALT_CPK!M28 number where would I add the "±0.000"???

Thank you very much!!

And if I wanted three places after the decimal on the first number (ALK_ALT_CPK!M27) I would do the same??

Thanks to all!!

=C1+-(C2/C3) worked for me.