3x+9/2=12 - solution

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Solution for 3x+9/2=12 equation:

x in (-oo:+oo)

3*x+9/2 = 12 // - 12

3*x+9/2-12 = 0

3*x-15/2 = 0 // + 15/2

3*x = 15/2 // : 3

x = 15/2/3

x = 5/2

x = 5/2

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