Solve for x
x=\frac{C-765}{1200}
Solve for C
C=1200x+765
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1200x+765=C
Swap sides so that all variable terms are on the left hand side.
1200x=C-765
Subtract 765 from both sides.
\frac{1200x}{1200}=\frac{C-765}{1200}
Divide both sides by 1200.
x=\frac{C-765}{1200}
Dividing by 1200 undoes the multiplication by 1200.
x=\frac{C}{1200}-\frac{51}{80}
Divide C-765 by 1200.
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