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Mathematics, 28.01.2020 05:31 pringlehannah5151

How can i solve the following system of equations: -4x + y= 6, -5x -y =21. i know i can cancel out but i don't know where or where to go from there.

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How can i solve the following system of equations: -4x + y= 6, -5x -y =21. i know i can cancel out...
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