How do you solve for p: 2(p + 2) = r?

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Answer 1 · 2016-01-16T03:32:53

When solving for a variable in a formula, the variable in question has to be completely alone, with a coefficient of 1.

2(p + 2) = r
2p + 4 = r
2p = r - 4
p = #(r - 4)/2#

So, p = #(r - 4)/2#.

Here is one more complicated question for your practice:

Solve for x in the following equation:

#(2x + 9) / (4h)# = #(3x - 5)/ (3h)#

Feel free to ask how to do this one should you run into troubles.

Enjoy, and best of luck!