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trevor solved the system of equations below. what mistake did he make in his work?...
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Mathematics, 21.09.2019 11:50 nataliaguadaluoupa25
(05.02 mc)
trevor solved the system of equations below. what mistake did he make in his work?
2x + y = 5
x − 2y = 10
y = 5 − 2x
x − 2(5 − 2x) = 10
x − 10 + 4x = 10
5x − 10 = 10
5x = 0
x = 0
2(0) + y = 5
y = 5
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