## College Algebra (6th Edition)

Use the formula $$C=\frac{5}{9}(F-32)$$ to convert 86 degrees Fahrenheit temperature to its equivalent temperature on the Celsius scale. Start by substituting 86 for F in the equation $$C=\frac{5}{9}(86-32)$$ complete grouped operations first $$C=\frac{5}{9}(54)$$ since the $\frac{5}{9}$ is a fraction, turn the 54 into a fraction (by putting it over 1) so that you can multiply the two fractions: $$C=\frac{5}{9}\times\frac{54}{1}$$ cross reduce the 9 with the 54 (both are divisible by 9) $$C=\frac{5}{1}\times\frac{6}{1}$$ $$C=\frac{30}{1}$$ $$C=30$$