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[y = 4x] [x + y = 5]
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[y = 4x] [x + y = 5]

User Mahmoud Hboubati
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1 Answer

5 votes
x=1, y=4

Substitute 4x in for y in the second equation and you get 5x=5. Divide out 5 and you get x=1. Then, you can plug 1 in for x into either equation and solve for y.
User Dejsa Cocan
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