7=b/10+9

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Solution for 7=b/10+9 equation: 


b in (-oo:+oo)

7 = b/10+9 // - b/10+9

7-(b/10)-9 = 0

-1/10*b-2 = 0 // + 2

-1/10*b = 2 // : -1/10

b = 2/(-1/10)

b = -20

b = -20

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