21/2=a+3/4

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Solution for 21/2=a+3/4 equation: 


a in (-oo:+oo)

21/2 = a+3/4 // - a+3/4

21/2-a-(3/4) = 0

21/2-a-3/4 = 0

39/4-a = 0 // - 39/4

-a = -39/4 // * -1

a = 39/4

a = 39/4

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