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Question

Subtract 20 from x , multiply by y and assign the value to z​

Answer

Why must we use parentheses around 'x-20' in the expression y(x-20)=z? Explanation: The expression y(x-20)=z means that y is multiplied by the difference of x and 20 to get z. We need to use parentheses around 'x-20' to specify the order of operations, indicating that the difference should be calculated before the multiplication. This helps clarify the meaning of the expression and avoids any confusion in interpreting it.