-28=3w+4w-7

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Solution for -28=3w+4w-7 equation: 


w in (-oo:+oo)

-28 = 3*w+4*w-7 // - 3*w+4*w-7

7-(3*w)-(4*w)-28 = 0

7-3*w-4*w-28 = 0

-7*w-21 = 0 // + 21

-7*w = 21 // : -7

w = 21/(-7)

w = -3

w = -3

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