Question

20 = -10 + \frac{1}{2}z

Explanation:

Step1: Add 10 to both sides

To isolate the term with \( z \), we add 10 to both sides of the equation \( 20 = -10 + \frac{1}{2}z \). This gives us \( 20 + 10 = -10 + 10 + \frac{1}{2}z \), which simplifies to \( 30 = \frac{1}{2}z \).

Step2: Multiply both sides by 2

To solve for \( z \), we multiply both sides of the equation \( 30 = \frac{1}{2}z \) by 2. This gives us \( 30\times2=\frac{1}{2}z\times2 \), which simplifies to \( z = 60 \).

Answer:

\( z = 60 \)