Question

4）102 - 46 = 4

Explanation:

Step1: Add 46 to both sides

To solve for \( z \) in the equation \( 10z - 46 = 4 \), we first add 46 to both sides to isolate the term with \( z \).
\( 10z - 46 + 46 = 4 + 46 \)
Simplifying both sides, we get \( 10z = 50 \).

Step2: Divide both sides by 10

Now, we divide both sides of the equation \( 10z = 50 \) by 10 to solve for \( z \).
\( \frac{10z}{10} = \frac{50}{10} \)
Simplifying, we find that \( z = 5 \).

Answer:

\( z = 5 \)