Question

find the celsius temperature (to the nearest degree) when fahrenheit temperature is 77° by solving the equation 77 = \\(\frac{9}{5}\\)c + 32, where f is the fahrenheit temperature (in degrees) and c is the celsius temperature.\
\\(\bigcirc\\) 171°\
\\(\bigcirc\\) 145°\
\\(\bigcirc\\) 39°\
\\(\bigcirc\\) 25°

Explanation:

Step1: Subtract 32 from both sides

$77 - 32 = \frac{9}{5}C$
$45 = \frac{9}{5}C$

Step2: Multiply by $\frac{5}{9}$ to solve for C

$C = 45 \times \frac{5}{9}$
$C = 25$

Answer:

25°