solve for d. -5(-d + 5) - 7d = 13 d =

Explanation:

Step1: Expand the brackets

$$ \begin{align*} -5(-d + 5)-7d&=13\ 5d-25 - 7d&=13 \end{align*} $$

Step2: Combine like - terms

$$ \begin{align*} (5d-7d)-25&=13\ -2d-25&=13 \end{align*} $$

Step3: Add 25 to both sides

$$ \begin{align*} -2d-25 + 25&=13+25\ -2d&=38 \end{align*} $$

Step4: Divide both sides by - 2

$$ \begin{align*} \frac{-2d}{-2}&=\frac{38}{-2}\ d&=-19 \end{align*} $$

Answer:

(-19)