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a system of equations and its solution are given below.

system a

x-y=3
-2x+4y= -2
solution: (5,2)

complete the sentences to explain what steps were followed to obtain the system of equations below.

system b
x-y=3
2x=10

to get system b, the ? equation in system a was replaced by the sum of that equation and the ? equation multiplied by ? . the solution to system b ? the same as the solution to system a.

fill in the blank where the question marks are.