5+b/9=4 - solution

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Solution for 5+b/9=4 equation:

b in (-oo:+oo)

b/9+5 = 4 // - 4

b/9-4+5 = 0

1/9*b+1 = 0 // - 1

1/9*b = -1 // : 1/9

b = -1/1/9

b = -9

b = -9

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