7=-4/5x-9

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Solution for 7=-4/5x-9 equation: 


x in (-oo:+oo)

7 = (-4/5)*x-9 // - (-4/5)*x-9

7-((-4/5)*x)+9 = 0

(4/5)*x+7+9 = 0

4/5*x+16 = 0 // - 16

4/5*x = -16 // : 4/5

x = -16/4/5

x = -20

x = -20

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