Algebra variable population

Teaching Transcript

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When 'C' equals 3, what does 2 'C' plus 8 equal?

2 'C' is short form for 2 times 'C' so we can substitute and have 2 times 3

2 times 3 is 6, so our term becomes 6 plus 8

6 plus 8 equals 14, which is our answer

This math skill involves substituting a given value for a variable in an algebraic expression and simplifying the expression to find the result. It teaches how to perform operations after substituting to get the final answer.