(7X-12)/(3X-8)=45

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Solution for (7X-12)/(3X-8)=45 equation: 


D( X )

3*X-8 = 0

3*X-8 = 0

3*X-8 = 0

3*X-8 = 0 // + 8

3*X = 8 // : 3

X = 8/3

X in (-oo:8/3) U (8/3:+oo)

(7*X-12)/(3*X-8) = 45 // - 45

(7*X-12)/(3*X-8)-45 = 0

(7*X-12)/(3*X-8)+(-45*(3*X-8))/(3*X-8) = 0

7*X-45*(3*X-8)-12 = 0

348-128*X = 0

(348-128*X)/(3*X-8) = 0

(348-128*X)/(3*X-8) = 0 // * 3*X-8

348-128*X = 0

348-128*X = 0 // - 348

-128*X = -348 // : -128

X = -348/(-128)

X = 87/32

X = 87/32

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