Solve $V=c^3$V=c3 for $c$c.

Rearrange the equation $V=D+\frac{A}{Q}$V=D+AQ to make $A$A the subject.

Solve $\frac{V_1}{V_2}=\frac{P_2}{P_1}$V1V2=P2P1 for $P_1$P1.

Solve $F=\frac{Gm_1m_2}{d^2}$F=Gm1m2d2 for $m_2$m2.