Here is the equation:
[tex] -15.6 = -3.9r [/tex]
Since both decimals are negative, the answer will be positive.
- Negative times Negative = Positive
Divide both sides by -3.9 to leave the variable alone:
[tex] -15.6 \div -3.9 = -3.9r \div -3.9 \\ 4 = r [/tex]
r is equal to 4 → r = 4
