7w+9+5w=21

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Solution for 7w+9+5w=21 equation: 


w in (-oo:+oo)

7*w+5*w+9 = 21 // - 21

7*w+5*w-21+9 = 0

12*w-12 = 0 // + 12

12*w = 12 // : 12

w = 12/12

w = 1

w = 1

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