Rearranging formulae

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thebeatleman66 Posts: 1, Reputation: 1

New Member

#1

Sep 23, 2009, 12:20 PM

rearranging formulae

make m the subject of the formula p=m/2+2

Unknown008 Posts: 8,076, Reputation: 723

Uber Member

#2

Sep 23, 2009, 12:25 PM

Ok, that's how you do it:

$p = \frac{m}{2} + 2$

Subtract 2 from both sides:

$p -2 = \frac{m}{2} \cancel{+ 2 -2}$

$p -2 = \frac{m}{2}$

Multiply both sides by 2:

$(p -2) \times 2 = \frac{m}{\cancel{2}} \times\cancel{ 2}$

$2(p -2)2 = m$

$m= 2(p -2)$

$m= 2p -4$

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