To solve the equation \( 10(z - 1) = 50 \), we can follow these steps:
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Divide both sides by 10 to isolate \( (z - 1) \): \[ z - 1 = \frac{50}{10} \] This simplifies to: \[ z - 1 = 5 \]
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Add 1 to both sides to solve for \( z \): \[ z = 5 + 1 \] Therefore: \[ z = 6 \]
So, the complete statement is: \( z = 6 \).