R = -0.0075t+3.85. Solve for t.

Here's my working.

R = -0.0075t+3.85

R-3.85 = -0.0075t

-t = R-3.85/-0.0075

t = R-3.85/0.0075

I thought this was correct but in the answer book on the very last step, I am wrong:

t = 3.85-R/0.0075

Why is this?

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- June 16th 2011, 08:38 PMJanoDAlgebraic Fractions
R = -0.0075t+3.85. Solve for t.

Here's my working.

R = -0.0075t+3.85

R-3.85 = -0.0075t

-t = R-3.85/-0.0075

t = R-3.85/0.0075

I thought this was correct but in the answer book on the very last step, I am wrong:

t = 3.85-R/0.0075

Why is this? - June 16th 2011, 08:46 PMAlso sprach ZarathustraRe: Algebraic Fractions
- June 17th 2011, 01:27 AMHallsofIvyRe: Algebraic Fractions