Evaluate
-\frac{11\pi }{12}\approx -2.879793266
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\frac{-35\pi }{12}+\frac{12\times 2\pi }{12}
To add or subtract expressions, expand them to make their denominators the same. Multiply 2\pi times \frac{12}{12}.
\frac{-35\pi +12\times 2\pi }{12}
Since \frac{-35\pi }{12} and \frac{12\times 2\pi }{12} have the same denominator, add them by adding their numerators.
\frac{-35\pi +24\pi }{12}
Do the multiplications in -35\pi +12\times 2\pi .
\frac{-11\pi }{12}
Combine like terms in -35\pi +24\pi .
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