5/2y+3(21-5/2)/3=21

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Solution for 5/2y+3(21-5/2)/3=21 equation: 


y in (-oo:+oo)

(5/2)*y+(3*(21-(5/2)))/3 = 21 // - 21

(5/2)*y+(3*(21-(5/2)))/3-21 = 0

(5/2)*y+(3*(21-5/2))/3-21 = 0

5/2*y-5/2 = 0 // + 5/2

5/2*y = 5/2 // : 5/2

y = 5/2/5/2

y = 1

y = 1

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