2a-5=-21

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Solution for 2a-5=-21 equation: 


a in (-oo:+oo)

2*a-5 = -21 // + 21

2*a-5+21 = 0

2*a+16 = 0 // - 16

2*a = -16 // : 2

a = -16/2

a = -8

a = -8

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