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Please help me i dony know how to do this

Please help me i dony know how to do this-example-1
User Danuker
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1 Answer

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substitute y = -2x + 4 into 7y = -14x +28

7y = -14x +28
7(-2x + 4)= -14x +28
-14x + 28 = -14x +28
0 = 0

answer
infinitely many solutions


User Jebeaudet
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