3+x=21/8 - solution

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Solution for 3+x=21/8 equation:

x in (-oo:+oo)

x+3 = 21/8 // - 21/8

x-(21/8)+3 = 0

x-21/8+3 = 0

x+3/8 = 0 // - 3/8

x = -3/8

x = -3/8

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