4/5=-4/7x

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


x in (-oo:+oo)

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

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

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

4/7*x+4/5 = 0 // - 4/5

4/7*x = -4/5 // : 4/7

x = -4/5/4/7

x = -7/5

x = -7/5

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