Question #6362d

Question

343 views around the world

You can reuse this answer
Creative Commons License

Answer 1 · 2017-07-12T02:37:03

#L=2r-p/2#

I believe the expression is #p=2r+2L+2r# in which case we can isolate #L# by subtracting #2L# from both sides:

#p-2L=2r+cancel (2L-2L)+2r#

#p-2L=2r+2r#

We must also subtract #p# from both sides:

#cancel(p-p)-2L=2r+2r-p#

#-2L=2r+2r-p#

Lastly we divide #-2# to both sides:

#cancel(-2)/cancel(-2)L=(2r+2r-p)/2#

#L=r+r-p/2#

We can actually simply this further by adding #r# and #r# because they are like terms.

#L=2r-p/2#