4a-3=21

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Solution for 4a-3=21 equation: 


a in (-oo:+oo)

4*a-3 = 21 // - 21

4*a-21-3 = 0

4*a-24 = 0 // + 24

4*a = 24 // : 4

a = 24/4

a = 6

a = 6

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