(3x+3)/2=12

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Solution for (3x+3)/2=12 equation: 


x in (-oo:+oo)

(3*x+3)/2 = 12 // - 12

(3*x+3)/2-12 = 0

(3*x+3)/2+(-12*2)/2 = 0

3*x-12*2+3 = 0

3*x-21 = 0

(3*x-21)/2 = 0

(3*x-21)/2 = 0 // * 2

3*x-21 = 0

3*x-21 = 0 // + 21

3*x = 21 // : 3

x = 21/3

x = 7

x = 7

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