Step-by-step explanation:
<u>Substitute 86 ⁰F into the given equation:</u>
<u>Subtract 32 from both sides:</u>
<u>Divide each side by 1.8:</u>
If the temperature is 86 ⁰F, that is equivalent to 30 ⁰C.
<u>Substitute 40 ⁰C into the equation:</u>
<u>Multiply:</u>
<u>Add:</u>
If the temperature is 40 ⁰C, that is equivalent to 104 ⁰F.