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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
 one year ago
 one year ago
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
 one year ago
 one year ago

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onceandforallBest ResponseYou've already chosen the best response.1
He subtracted 10 from the right side instead of adding 10 to the right side
 one year ago
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