3w-7/21

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Solution for 3w-7/21 equation: 


w in (-oo:+oo)

3*w-(7/21) = 0

3*w-1/3 = 0

3*w-1/3 = 0 // + 1/3

3*w = 1/3 // : 3

w = 1/3/3

w = 1/9

w = 1/9

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