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4x+7y=8.77 8x+14y=15.80

4x+7y=8.77 8x+14y=15.80
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4x+7y=8.77 8x+14y=15.80

User ABTOMAT
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If i times the first equation by -2 that gives me -8x-14y=-17.54 8x+14y=15.80 Everything cancels out and I'm left with -1.74
User Mathieson
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