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Solve for A
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SA-2A=Ph
Subtract 2A from both sides.
\left(S-2\right)A=Ph
Combine all terms containing A.
\frac{\left(S-2\right)A}{S-2}=\frac{Ph}{S-2}
Divide both sides by S-2.
A=\frac{Ph}{S-2}
Dividing by S-2 undoes the multiplication by S-2.
2A+Ph=SA
Swap sides so that all variable terms are on the left hand side.
Ph=SA-2A
Subtract 2A from both sides.
hP=AS-2A
The equation is in standard form.
\frac{hP}{h}=\frac{A\left(S-2\right)}{h}
Divide both sides by h.
P=\frac{A\left(S-2\right)}{h}
Dividing by h undoes the multiplication by h.