To solve the equation $\frac{r}{10} + 4 = 5$, we need to isolate the variable $r$.
Step 1: Undo the addition.
The equation has $+ 4$ on the left side. To get rid of it, we subtract 4 from both sides of the equation.
$$ \frac{r}{10} + 4 - 4 = 5 - 4 $$
$$ \frac{r}{10} = 1 $$
Step 2: Undo the division.
The variable $r$ is being divided by 10. To isolate $r$, we need to multiply both sides by 10.
$$ \frac{r}{10} \times 10 = 1 \times 10 $$
$$ r = 10 $$
Verification:
Let's plug $r = 10$ back into the original equation to check if it works.
$$ \frac{10}{10} + 4 = 5 $$
$$ 1 + 4 = 5 $$
$$ 5 = 5 $$
The solution is correct.
Final Answer:
r = 10
Parent Tip: Review the logic above to help your child master the concept of worksheet on two step equations.
