12/40=x/3000

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Solution for 12/40=x/3000 equation: 


x in (-oo:+oo)

12/40 = x/3000 // - x/3000

12/40-(x/3000) = 0

3/10-1/3000*x = 0 // - 3/10

-1/3000*x = -3/10 // : -1/3000

x = -3/10/(-1/3000)

x = 900

x = 900

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