(4a/a-3)-(12/a-3)

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Solution for (4a/a-3)-(12/a-3) equation: 


D( a )

a = 0

a = 0

a = 0

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

(4*a)/a-(12/a)-3+3 = 0

(4*a)/a-12*a^-1-3+3 = 0

-12*a^-1 = -4 // : -12

a^-1 = 1/3

-1 < 0

1/(a^1) = 1/3 // * a^1

1 = 1/3*a^1 // : 1/3

3 = a^1

a = 3

a = 3

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