y-9=-7/8x

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Solution for y-9=-7/8x equation: 


x in (-oo:+oo)

y-9 = (-7/8)*x // - (-7/8)*x

y-((-7/8)*x)-9 = 0

(7/8)*x+y-9 = 0

7/8*x+y-9 = 0 // - y-9

7/8*x = -(y-9) // : 7/8

x = (-(y-9))/7/8

x = 8/7*(9-y)

x = 8/7*(9-y)

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