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Breann solved the system of equations below. What mistake did she make in her work? 2x + y = 5 x − 2y = 10 y = 5 − 2x x − 2(5 − 2x) = 10 x − 10 + 4x = 10 5x − 10 = 10 5x = 20 x = 4 2(4) + y = 5 y = −3

asked Mar 10, 2016

Mathematics
high-school

2 answers

4 votes

152k views

A multiple of 2 which is smaller than 200

asked Jul 10, 2015

Mathematics
middle-school

1 answer

0 votes

183k views

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