Solve for a
a=\frac{12}{x}
x\neq 0
Solve for x
x=\frac{12}{a}
a\neq 0
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ax-3=9
Multiply both sides of the equation by 9, the least common multiple of 9,3.
ax=9+3
Add 3 to both sides.
ax=12
Add 9 and 3 to get 12.
xa=12
The equation is in standard form.
\frac{xa}{x}=\frac{12}{x}
Divide both sides by x.
a=\frac{12}{x}
Dividing by x undoes the multiplication by x.
ax-3=9
Multiply both sides of the equation by 9, the least common multiple of 9,3.
ax=9+3
Add 3 to both sides.
ax=12
Add 9 and 3 to get 12.
\frac{ax}{a}=\frac{12}{a}
Divide both sides by a.
x=\frac{12}{a}
Dividing by a undoes the multiplication by a.
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