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15-11-2022
Mathematics

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Select all equations that can result from adding these two equations or subtracting one from the other.

{x+y=123x−5y=4

A -2x−4y=80

B -2x+6y=80

C 4x−4y=164 x minus 4 y is equal to 16

D 4x+4y=164 x plus 4 y is equal to 16

E 2x−6y=-82 x minus 6 y is equal to

F 5x−4y=285 x minus 4 y is equal to 28

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