21-7/2y

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Solution for 21-7/2y equation: 


y in (-oo:+oo)

21 > (-7/2)*y // - (-7/2)*y

21-((-7/2)*y) > 0

(7/2)*y+21 > 0

7/2*y+21 > 0 // - 21

7/2*y > -21 // : 7/2

y > -21/7/2

y > -6

y in (-6:+oo)

(-6:+oo)

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