How do you solve p=(r+2s)/t for r?

2 Answers
Oct 1, 2017

r=pt-2s

Explanation:

First, we multiply both sides by t:

From
p=(r+2s)/t to pt=r+2s

Then, we subtract 2s from both sides:

r+2scolor(blue)-color(blue)2color(blue)s=ptcolor(blue)-color(blue)2color(blue)s
r=pt-2s

Oct 1, 2017

r=pt-2s

Explanation:

If
color(white)("XXX")p=(r+2s)/t
then

after multiplying both sides by t
color(white)("XXX")pt=r+2s

and then subtracting 2s from both sides
color(white)("XXX")pt-2s=r
...or using the reflexive property for equality: r=pt-2s