Rearranging Formulas (Where Subject Appears Once)

This lesson covers:

  1. How to rearrange formulas to change the subject
  2. E.g. 'Rearrange b = 3(2 + a) to make a the subject'

Make p the subject of the formula:

2m=3+p
p=2m-3|p=-3+2m|2m-3=p|-3+2m=p

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Make c the subject of the formula:

a=3c−d
c=\frac{a+d}{3}|c=\frac{d+a}{3}|c=\frac{a}{3}+\frac{d}{3}|c=\frac{d}{3}+\frac{a}{3}

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Make b the subject of the formula:

2a=5b​−3
b=10a+15|b=15+10a

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Make q the subject of the formula:

x=q+10a
q=x-10a|q=-10a+x

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Make a the subject of the formula:

v=4ac​
a=\frac{4v}{c}

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Make g the subject of the formula:

x=4g​+1
g=4x-4|g=-4+4x

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Make x the subject of the formula:

y=4x+5
x=\frac{y-5}{4}|x=\frac{-5+y}{4}

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Make h the subject of the formula:

i=√h
h=i^2

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Make b the subject of the formula:

w=b2+n
b=\sqrt{w-n}

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Make z the subject of the formula:

v2+z2=k2
z=\sqrt{k^2-v^2}|z=\sqrt{-v^2+k^2}

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Make r the subject of the formula:

q=2r+1
r=\frac{q-1}{2}|r=\frac{-1+q}{2}

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