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3x - 4y = 10

-3x - 4y = 8 -> add line 1 to line 2 3x - 4y = 10

0x - 8y = 18 -> -8y = 18 -> y = -18/8 = -9/4 -> 3x - 4*(-9/4) = 10 -> 3x + 9 = 10 -> 3x = 1 -> x = 1/3

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15y ago

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