A Key to the Elementary Treatise on AlgebraNichols & Hall, 1842 - 56 σελίδες |
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Σελίδα 27
... equations give x 12 , and y = 8 . = Changing the sign of y in the original equations , we have x + y = 20 , and 6x + 3y = 96 ; and the ques- tion should be changed accordingly . 10. Let x and y represent the number of gallons , which ...
... equations give x 12 , and y = 8 . = Changing the sign of y in the original equations , we have x + y = 20 , and 6x + 3y = 96 ; and the ques- tion should be changed accordingly . 10. Let x and y represent the number of gallons , which ...
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