Question

-3(a + 5) = 30 distribution

Answer 1

To solve this using the distributive property you multiply the term oit the parenthesis by the terms in the parenthesis:

`\begin{gathered} -3(a+5)=30 \\ \\ -3\cdot a-3\cdot5=30 \\ \\ \\ -3a-15=30 \end{gathered}`

Then, to solve a you:

add 15 in both sides of the equation:

`\begin{gathered} -3a-15+15=30+15 \\ \\ -3a=45 \end{gathered}`

Divide both sides of the equation into -3

`\begin{gathered} (-3)/(-3)a=(45)/(-3) \\ \\ a=-15 \end{gathered}`

Then, a is -15