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 \( r = 5 \).

4r-8=12 slove for r

1 answer

To solve the equation \( 4r - 8 = 12 \) for \( r \), follow these steps:

Add 8 to both sides of the equation to isolate the term with \( r \): \[ 4r - 8 + 8 = 12 + 8 \] This simplifies to: \[ 4r = 20 \]
Divide both sides by 4 to solve for \( r \): \[ r = \frac{20}{4} \] This simplifies to: \[ r = 5 \]

So, the solution is \( r = 5 \).