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Q: How many solutions does 2x-y equals 8 and x plus y equals 1 have?

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15xy-2xy-7x+x=13xy-6x

It's an hyperbola equation.

2xy + 6xy = 8xy

Y=15/(2c+2x)

Because 2x+y is addition not multiplication

2xy=2*30*2=120

2xy - 4x plus 8y - 16 equals x plus 4 in parentheses multiplied by 2y minus 4 in parentheses. So, the factors are ( x + 4) and ( 2y - 4) .

What is : 5xy- x2t + 2xy + 3x2t

The three terms are: -3xy2, 2xy and -4y3

That equals 2xy + 3y which factors to y(2x + 3)

2xy substitute 3 for y and 5 for x 2(5)(3) = 30

L = 3x + 2y

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