Create a system of equations from a word problem

The video tutorial explains how to solve a problem involving the concept of 'less than' in equations. It starts by introducing the problem statement and then delves into understanding what 'less than' means in mathematical terms. The tutorial guides viewers through solving the equation c - 9 = d, using elimination to narrow down possible solutions. Finally, it confirms the correct answer and explains the concept of 'twice c'.

What operation is implied when the text states 'd is less than'?

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How is 'twice c' represented in mathematical terms?

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