Respuesta :
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