solve for j.\n-7j - 14j + 9 = -12\nj =

Explanation:

Step1: Combine like terms

$$ \begin{align*} -7j - 14j+9&=-12\ (-7 - 14)j+9&=-12\ -21j + 9&=-12 \end{align*} $$

Step2: Subtract 9 from both sides

$$ \begin{align*} -21j+9 - 9&=-12 - 9\ -21j&=-21 \end{align*} $$

Step3: Divide both sides by -21

$$ \begin{align*} \frac{-21j}{-21}&=\frac{-21}{-21}\ j&=1 \end{align*} $$

Answer:

(1)