describe how to use the formula $c = \\frac{5}{9}(f - 32)$ to find the temperature in degrees celsius if the…

Explanation:

Step1: Substitute F - value

Substitute $F = 86$ into the formula $C=\frac{5}{9}(F - 32)$. So we get $C=\frac{5}{9}(86 - 32)$.

Step2: Calculate the value inside parentheses

First, calculate $86-32 = 54$. Then the formula becomes $C=\frac{5}{9}\times54$.

Step3: Multiply

$\frac{5}{9}\times54=5\times6 = 30$.

Answer:

$30^{\circ}C$