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 2 years 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
 2 years 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

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onceandforall
 2 years ago
Best ResponseYou've already chosen the best response.1He subtracted 10 from the right side instead of adding 10 to the right side
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