(9-x)/4=12

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Solution for (9-x)/4=12 equation: 


x in (-oo:+oo)

(9-x)/4 = 12 // - 12

(9-x)/4-12 = 0

(9-x)/4+(-12*4)/4 = 0

9-x-12*4 = 0

-x-39 = 0

(-x-39)/4 = 0

(-x-39)/4 = 0 // * 4

-x-39 = 0

-x-39 = 0 // + 39

-x = 39 // * -1

x = -39

x = -39

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