2a+4=28

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Solution for 2a+4=28 equation: 


a in (-oo:+oo)

2*a+4 = 28 // - 28

2*a-28+4 = 0

2*a-24 = 0 // + 24

2*a = 24 // : 2

a = 24/2

a = 12

a = 12

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