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Alexander00
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 Answer He made no mistake He combined like terms incorrectly, it should have been 4x instead of 5x He should have substituted 5 + 2x He subtracted 10 from the right side instead of adding 10 to the right side
He subtracted 10 from the right side instead of adding 10 to the right side