Question

R(r1+r2)=r1r2for r2

Answer 1

\[R(r1+r2)=r1r2\] \[Rr1+Rr2=r1r2\] \[Rr1=r1r2-Rr2\] \[Rr1=r2(r1-R)\] \[r2 = \frac{ Rr1 }{ r1-R }\]

Answer 2

Damn, hate notation, could have swore that was a function...

Answer 3

Nj1020 please explain step by step your answer

Answer 4

Okay. I'll go line by line.
1. The original expression
2. I used the distributive property and multiplied the R to both r1 and r2
3. I then subtracted quantity Rr2 from both sides
4. Then I used the distributive property again to isolate r2 and the r1 and R
5. Then I simply divided both sides by quantity (r1-R)

Answer 5

Thank you!

Answer 6

Not a problem :D