Solve for F
F=\frac{6x}{x+7}
x\neq 0\text{ and }x\neq -7
Solve for x
x=\frac{7F}{6-F}
F\neq 6\text{ and }F\neq 0
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6F^{-1}x=x+7
Multiply both sides of the equation by 6.
6\times \frac{1}{F}x=x+7
Reorder the terms.
6\times 1x=Fx+F\times 7
Variable F cannot be equal to 0 since division by zero is not defined. Multiply both sides of the equation by F.
6x=Fx+F\times 7
Multiply 6 and 1 to get 6.
Fx+F\times 7=6x
Swap sides so that all variable terms are on the left hand side.
\left(x+7\right)F=6x
Combine all terms containing F.
\frac{\left(x+7\right)F}{x+7}=\frac{6x}{x+7}
Divide both sides by x+7.
F=\frac{6x}{x+7}
Dividing by x+7 undoes the multiplication by x+7.
F=\frac{6x}{x+7}\text{, }F\neq 0
Variable F cannot be equal to 0.
6F^{-1}x=x+7
Multiply both sides of the equation by 6.
6F^{-1}x-x=7
Subtract x from both sides.
-x+6\times \frac{1}{F}x=7
Reorder the terms.
-xF+6\times 1x=7F
Multiply both sides of the equation by F.
-xF+6x=7F
Multiply 6 and 1 to get 6.
\left(-F+6\right)x=7F
Combine all terms containing x.
\left(6-F\right)x=7F
The equation is in standard form.
\frac{\left(6-F\right)x}{6-F}=\frac{7F}{6-F}
Divide both sides by 6-F.
x=\frac{7F}{6-F}
Dividing by 6-F undoes the multiplication by 6-F.
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