Solve for p
p=\frac{v}{7}
Solve for v
v=7p
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6v-3p-18p=3v
Subtract 18p from both sides.
6v-21p=3v
Combine -3p and -18p to get -21p.
-21p=3v-6v
Subtract 6v from both sides.
-21p=-3v
Combine 3v and -6v to get -3v.
\frac{-21p}{-21}=-\frac{3v}{-21}
Divide both sides by -21.
p=-\frac{3v}{-21}
Dividing by -21 undoes the multiplication by -21.
p=\frac{v}{7}
Divide -3v by -21.
6v-3p-3v=18p
Subtract 3v from both sides.
3v-3p=18p
Combine 6v and -3v to get 3v.
3v=18p+3p
Add 3p to both sides.
3v=21p
Combine 18p and 3p to get 21p.
\frac{3v}{3}=\frac{21p}{3}
Divide both sides by 3.
v=\frac{21p}{3}
Dividing by 3 undoes the multiplication by 3.
v=7p
Divide 21p by 3.
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