(9+x)/12=-3

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Solution for (9+x)/12=-3 equation: 


x in (-oo:+oo)

(x+9)/12 = -3 // + 3

(x+9)/12+3 = 0

(x+9)/12+(3*12)/12 = 0

x+3*12+9 = 0

x+45 = 0

(x+45)/12 = 0

(x+45)/12 = 0 // * 12

x+45 = 0

x+45 = 0 // - 45

x = -45

x = -45

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