Respuesta :

isabellamariehall

Answer: I believe it would be addition because you are adding 2 to both sides of the equation

Step-by-step explanation:

Answer:

its addition

Step-by-step explanation:

beacuse you have to move constant to the right-hand side and change the sign ---> x=-9+2

and then you have to caculate the ADDITION ( -9+2 = -7)

x= -7

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