4/a=-2/9

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Solution for 4/a=-2/9 equation: 


D( a )

a = 0

a = 0

a = 0

a in (-oo:0) U (0:+oo)

4/a = -2/9 // + -2/9

4/a-(-2/9) = 0

4/a+2/9 = 0

4*a^-1 = -2/9 // : 4

a^-1 = -1/18

-1 < 0

1/(a^1) = -1/18 // * a^1

1 = -1/18*a^1 // : -1/18

-18 = a^1

a = -18

a = -18

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