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How does 3x plus 9y equals 36 using the same method as 12x plus 4y equals 18?
Wiki User
∙ 13y ago
We have 3x+9y=36, or equivalently 12x+36y=144. We also have 12x+4y=18, so subtracting these we have 32y=126 or y=63/16. Substituting this into our original equation leaves 3x=36-9*63/16 or x = 12-3*63/16 = 3/16.
So: x=3/16, y=63/16
Wiki User
∙ 13y ago
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