(x+4)/2=21/12

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Solution for (x+4)/2=21/12 equation: 


x in (-oo:+oo)

(x+4)/2 = 21/12 // - 21/12

(x+4)/2-(21/12) = 0

(x+4)/2-7/4 = 0

(4*(x+4))/(2*4)+(-7*2)/(2*4) = 0

4*(x+4)-7*2 = 0

4*x+2 = 0

(4*x+2)/(2*4) = 0

(4*x+2)/(2*4) = 0 // * 2*4

4*x+2 = 0

4*x+2 = 0 // - 2

4*x = -2 // : 4

x = -2/4

x = -1/2

x = -1/2

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