2a+9=13

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Solution for 2a+9=13 equation: 


a in (-oo:+oo)

2*a+9 = 13 // - 13

2*a-13+9 = 0

2*a-4 = 0 // + 4

2*a = 4 // : 2

a = 4/2

a = 2

a = 2

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