r(45)=r(45-1)-4

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Solution for r(45)=r(45-1)-4 equation: 



r(45)=r(45-1)-4

We move all terms to the left:

r(45)-(r(45-1)-4)=0

We add all the numbers together, and all the variables

r45-(r44-4)=0

We add all the numbers together, and all the variables

r^45-(r44-4)=0

We get rid of parentheses

r^45-r44+4=0

We do not support erpression: r^45

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