Solve for T
T=\frac{W-400}{15}
Solve for W
W=15T+400
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15T+400=W
Swap sides so that all variable terms are on the left hand side.
15T=W-400
Subtract 400 from both sides.
\frac{15T}{15}=\frac{W-400}{15}
Divide both sides by 15.
T=\frac{W-400}{15}
Dividing by 15 undoes the multiplication by 15.
T=\frac{W}{15}-\frac{80}{3}
Divide W-400 by 15.
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