8/21=-2/7x

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Solution for 8/21=-2/7x equation: 


x in (-oo:+oo)

8/21 = (-2/7)*x // - (-2/7)*x

8/21-((-2/7)*x) = 0

(2/7)*x+8/21 = 0

2/7*x+8/21 = 0 // - 8/21

2/7*x = -8/21 // : 2/7

x = -8/21/2/7

x = -4/3

x = -4/3

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