Question

W=2PR/R-r, solve for R

Answer 1

`W=2 (PR)/(R) -r`


`W=(2PR)/(R) -r`


`W+r= (2PR)/(R)`
`Add \ r \ to \ both \ sides`


`(W+r)R=2PR`
`Multiply \ both \ sides \ by \ R`


`R= (2PR)/(W+R)`
`Divide \ both \ sides \ by \ W+r`