w-9+7w=23 - solution

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Solution for w-9+7w=23 equation:

w in (-oo:+oo)

w+7*w-9 = 23 // - 23

w+7*w-23-9 = 0

8*w-32 = 0 // + 32

8*w = 32 // : 8

w = 32/8

w = 4

w = 4

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