3d+4=21-3d-1/2

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Solution for 3d+4=21-3d-1/2 equation: 


d in (-oo:+oo)

3*d+4 = 21-(3*d)-(1/2) // - 21-(3*d)-(1/2)

3*d+3*d+1/2-21+4 = 0

6*d-33/2 = 0 // + 33/2

6*d = 33/2 // : 6

d = 33/2/6

d = 11/4

d = 11/4

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