https://communities.sas.com/t5/New-SAS-User/multiplying-a-variable-for-1/m-p/884161#M39245 <P>You could actually try running the code and seeing what happens with your own eyes, does the value of VARIABLE change? What does it change to?</P> <P>&nbsp;</P> <P>But let me ask another question — forget SAS for a moment, just answer based upon what you have learned about math in your life — what do you get if you multiply a number, let's say the number 5, by -1 ? Do this in your head or on paper, what do you get?</P> Mon, 10 Jul 2023 11:12:33 GMT PaigeMiller 2023-07-10T11:12:33Z https://communities.sas.com/t5/New-SAS-User/multiplying-a-variable-for-1/m-p/884146#M39242 <P>HI, i'm trying to understand a code, i found the following:</P> <PRE><CODE class=" language-sas">data Db_1; set db; variable= variable*(-1) ; run; </CODE></PRE> <P>what could be the reason? i can't understand this data step</P> Mon, 10 Jul 2023 07:03:56 GMT https://communities.sas.com/t5/New-SAS-User/multiplying-a-variable-for-1/m-p/884146#M39242 ari2495 2023-07-10T07:03:56Z https://communities.sas.com/t5/New-SAS-User/multiplying-a-variable-for-1/m-p/884161#M39245 <P>You could actually try running the code and seeing what happens with your own eyes, does the value of VARIABLE change? What does it change to?</P> <P>&nbsp;</P> <P>But let me ask another question — forget SAS for a moment, just answer based upon what you have learned about math in your life — what do you get if you multiply a number, let's say the number 5, by -1 ? Do this in your head or on paper, what do you get?</P> Mon, 10 Jul 2023 11:12:33 GMT https://communities.sas.com/t5/New-SAS-User/multiplying-a-variable-for-1/m-p/884161#M39245 PaigeMiller 2023-07-10T11:12:33Z