Question

\begin{aligned} A.&&3(x+2)&=18 \\\\ B.&&3x+6&=18 \end{aligned} A. ​ 3(x+2) =18 B. 3x+6 =18

Answer 1

$\huge\textbf{Use the distributive property.}$

$\begin{aligned}A.&&3(x+2)&=18\\ B.&&3x+6&=18 \end{aligned}$

You can use the distributive property to get equation B from equation A.

The distributive property proves that $a(b+c)=ab+ac$. Use this same logic on equation A, distributing $3$ to $(x+2)$.

$\begin{aligned}3(x+2)&=18\\3x+3(2)&=18\\3x+6&=18\end{aligned}$