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10x plus 9y equals 4 and -6x plus 4y equals -5?

Updated: 12/12/2022

Wiki User

∙ 14y ago

Best Answer

Multiply first equation by 3 and second equation by 5:

30x + 27y = 12, -30x + 20y = -25; add these two:

47y = -13, making y = -13/47 and x = -61/94

I have checked these values against the original equations and they satisfy both. Weird solution tho'!

Wiki User

∙ 14y ago

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Q: 10x plus 9y equals 4 and -6x plus 4y equals -5?

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6x = 32 - 4y and 4y - 8 = 6x so 32 - 4y = 4y - 8 ie 40 = 8y so y = 5 and x = 2

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