She can make highest 6 batches of cookies.
An equation is a mathematical statement that is formed when two algebraic expressions are equated using an equal sign.
The number of eggs require to make one batch is 3
The total number of eggs Xiaoming have is 20
Let x be the number of batches that can be made
The greatest number of batch she can make is given by the equation
x = 20/3 = 6 2/3
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