9+7w+5w=69

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Solution for 9+7w+5w=69 equation: 


w in (-oo:+oo)

7*w+5*w+9 = 69 // - 69

7*w+5*w-69+9 = 0

12*w-60 = 0 // + 60

12*w = 60 // : 12

w = 60/12

w = 5

w = 5

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