Respuesta :

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Answer:

Equation D does not belong.  

Step-by-step explanation:

Equation A is a linear equation with variables x and y.

Equation B is a linear equation with variables c and t.

Equation C is a linear equation with variables a and b.

Equation D is a linear equation with a variable n.

Equations A, B, and C are equations with two variables.

Equation D has only one variable.

Equation D does not belong with the other three.

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