r=(cbr - ima)-(cdr - em)\ncbr = 6% ima = 5%\ncdr = 2% em = 12%\nwhat is r?

Explanation:

Step1: Substitute given values

$r=(6% - 5%)-(2% - 1%)$

Step2: Calculate first parenthesis

$6% - 5%=1%$

Step3: Calculate second parenthesis

$2% - 1% = 1%$

Step4: Subtract results

$r=1% - 1%=0%$

Answer:

$0%$