The expression that represents the statement is a - 15
The mathematical statement is given as:
The age, a, decreased by 15 years
The variable in the above mathematical statement is
Variable a
This means that the decrease the variable in the above mathematical statement by 15
When the variable in the above mathematical statement is decreased by 15 years, we have the following expression
a - 15
This means that the representation of the the variable in the above mathematical statement is a - 15
Hence, the expression that represents the statement is a - 15
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