7a+9=69+a

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Solution for 7a+9=69+a equation: 


a in (-oo:+oo)

7*a+9 = a+69 // - a+69

7*a-a-69+9 = 0

6*a-60 = 0 // + 60

6*a = 60 // : 6

a = 60/6

a = 10

a = 10

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