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Carlos 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
He should have substituted 5 + 2x
He did not distribute correctly
He combined like terms incorrectly, it should have been 4x instead of 5x
He made no mistake
 one year ago
 one year ago
Carlos 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 He should have substituted 5 + 2x He did not distribute correctly He combined like terms incorrectly, it should have been 4x instead of 5x He made no mistake
 one year ago
 one year ago

This Question is Closed

geerky42Best ResponseYou've already chosen the best response.0
Didn't realize it's multiple choices. Look carefully at step two and three.
 one year ago
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