start by simplifying
\[\frac{1}{R}+\frac{1}{3R}=?\]
then multiply the answer by 1 so that the numerator will be equal to 1
\[1=\frac{2}{2}=\frac{\frac{1}{2}}{\frac{1}{2}}\]
then the denominator will be R_tot
OpenStudy (anonymous):
can you solve I do not understand
OpenStudy (anonymous):
ok then ill just simplify the first part
\[\frac{1}{R}+\frac{1}{3R}\]
\[1*\frac{1}{R}+\frac{1}{3R}\]
\[\frac{3}{3}*\frac{1}{R}+\frac{1}{3R}\]
\[\frac{3}{3R}+\frac{1}{3R}\]
\[\frac{4}{3R}\]
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OpenStudy (anonymous):
good luck with the rest
OpenStudy (anonymous):
4/3R=1/Rtot 4Rtot=3R?
OpenStudy (anonymous):
yes keep going
OpenStudy (anonymous):
emmm I dont know how to keep going
OpenStudy (anonymous):
there is 2 diffrent variables
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