Question

identify the second step in solving this equation for y: -3(y + 6) = 21. (1 point) divide both sides by -3. add 6 to both sides. divide both sides by 6. subtract 6 from both sides.

Explanation:

Step1: Isolate the term with y

First, we want to get rid of the -3 multiplying the (y + 6). So we divide both sides of the equation -3(y + 6)=21 by -3.
\(\frac{-3(y + 6)}{-3}=\frac{21}{-3}\), which simplifies to \(y + 6=-7\).

Step2: Solve for y

To get y alone, we need to undo the addition of 6. So we subtract 6 from both sides of the equation \(y+6 = - 7\).
\(y+6-6=-7 - 6\)

Answer:

Subtract 6 from both sides.