Create a linear equation to represent the following real-life situation: A pen is 9 cm long. Another smaller pen is x cm long. The difference in their lengths is 2 cm.
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Let the cost of a pen be x and the cost of a pencil be y
According to the statement, cost of a pen is thrice the cost of a pencil
⇒x=3y
⇒x−3y=0 which is a linear equation in two variables
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Answer: Let the cost of a pen be x and the cost of a pencil be y
According to the statement, cost of a pen is thrice the cost of a pencil
⇒x=3y
⇒x−3y=0 which is a linear equation in two variables
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