21=-7/6x

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Solution for 21=-7/6x equation: 


x in (-oo:+oo)

21 = (-7/6)*x // - (-7/6)*x

21-((-7/6)*x) = 0

(7/6)*x+21 = 0

7/6*x+21 = 0 // - 21

7/6*x = -21 // : 7/6

x = -21/7/6

x = -18

x = -18

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