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Dimas [21]
3 years ago
14

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 − 2

x) = 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 combined like terms incorrectly, it should have been 4x instead of 5x He subtracted 10 from the right side instead of adding 10 to the right side He made no mistake
Mathematics
1 answer:
patriot [66]3 years ago
6 0
The correct answer is "He did not distribute correctly". The correct incomplete-worked expression is x - 10 + 4x = 10

I hope this helps!
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