how do you solve the ordered pair- x+y=4 2x+y=5

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2x+y=51x+y=4to solve, subtract the latter from the former to get rid of the y:2x+y=5-(x+y=4)x=1substitute into original equation (either one, or both just to be sure)1+y=4y=32(1)+y=52+y=5y=3so, x=1; y=3