-8+4a=-21/2

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Solution for -8+4a=-21/2 equation: 


a in (-oo:+oo)

4*a-8 = -21/2 // + -21/2

4*a-(-21/2)-8 = 0

4*a+21/2-8 = 0

4*a+5/2 = 0 // - 5/2

4*a = -5/2 // : 4

a = -5/2/4

a = -5/8

a = -5/8

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