y-21/2=4 - solution

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Solution for y-21/2=4 equation:

y in (-oo:+oo)

y-(21/2) = 4 // - 4

y-(21/2)-4 = 0

y-21/2-4 = 0

y-29/2 = 0 // + 29/2

y = 29/2

y = 29/2

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