M.9 Solve two-step equations: complete the solution GK7
Learn with an example $✓$ or
Complete the process of solving the equation.
Fill in the missing term on each line. Simplify any fractions.
$\begin{aligned} 12 r + 3 & = 15 \\ 12 r & = ◻ Subtract 3 from both sides \\ r & = ◻ Divide both sides by 12 \end{aligned}$
Submit

Answer

Expert–verified

Hide Steps

Answer

So, the solution is $1$ .

Steps

Step 1 ：Subtract 3 from each side of the equation to get $12 r = 15 - 3$ .

Step 2 ：Simplify the right side of the equation to get $12 r = 12$ .

Step 3 ：Divide each side of the equation by 12 to solve for r, $r = \frac{12}{12}$ .

Step 4 ：Simplify the right side of the equation to get $r = 1$ .

Step 5 ：So, the solution is $1$ .