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The cost of a toy elephant is the same as the cost of 3 balls. Express the statement as a linear equation in two variables.

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x-y=3

x-3y=0

x+y=3

x=3y

answer is B.

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Detailed Solution

A linear equation in two variables is an equation that can be written as a form

The cost 3 balls =

The cost of a toy elephant = the cost of 3 balls.
⇒x=3y

So, option 2 is correct.

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