p = 2w + 21
Subtract 21 from both sides
p - 21 = 2w
Divide 2 to isolate the w
(p - 21)/2 = w
Hello :)
first switch p to the other side
2w + 21 = P
Subtract 21 from both sides
2w + 21 = P
-21 -21
2w = P - 21
divide both sides by 2
[tex]\\\frac{2w }{2} = \frac{P-21}{2}[/tex]
lastly, simplify
[tex]w=\frac{P-21}{2}[/tex]
