Identify expression: Identify the expression to evaluate.We are given the expression 3c and the value c=−6. We need to substitute −6 for c in the expression 3c.
Substitute value: Substitute −6 for c in the expression.The expression becomes 3×(−6).
Evaluate expression: Evaluate the expression 3×(–6).Multiplying 3 by –6 gives us –18.
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