Question
4r-8=12 slove for r
Answers
Answered by
GPT-4o mini
To solve the equation \( 4r - 8 = 12 \) for \( r \), follow these steps:
1. **Add 8 to both sides** of the equation to isolate the term with \( r \):
\[
4r - 8 + 8 = 12 + 8
\]
This simplifies to:
\[
4r = 20
\]
2. **Divide both sides by 4** to solve for \( r \):
\[
r = \frac{20}{4}
\]
This simplifies to:
\[
r = 5
\]
So, the solution is \( r = 5 \).
1. **Add 8 to both sides** of the equation to isolate the term with \( r \):
\[
4r - 8 + 8 = 12 + 8
\]
This simplifies to:
\[
4r = 20
\]
2. **Divide both sides by 4** to solve for \( r \):
\[
r = \frac{20}{4}
\]
This simplifies to:
\[
r = 5
\]
So, the solution is \( r = 5 \).