7w-4+2w=77

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Solution for 7w-4+2w=77 equation: 


w in (-oo:+oo)

7*w+2*w-4 = 77 // - 77

7*w+2*w-77-4 = 0

9*w-81 = 0 // + 81

9*w = 81 // : 9

w = 81/9

w = 9

w = 9

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