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01-08-2017
Mathematics

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If (3)x+y = 81 and (81)x-y = 3 find the values of x and y.

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ivana04 ivana04

11-09-2017

you have to isolate the variables meaning you have to do the opposite of multiply 81 you have to divide 3/81: x and y for both sides will be the same thing

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