Identify Expression: Identify the expression to evaluate.We are given the expression 3+h and the value of h as −15. We need to substitute −15 for h in the expression.
Substitute Value: Substitute −15 for h in the expression.The expression becomes 3+(−15).
Evaluate Expression: Evaluate the expression 3+(–15). Adding a negative number is the same as subtracting its absolute value. So, 3+(–15) is the same as 3−15, which equals –12.
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