5(9+b)=90

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Solution for 5(9+b)=90 equation: 


b in (-oo:+oo)

5*(b+9) = 90 // - 90

5*(b+9)-90 = 0

5*(b+9)-90 = 0

5*b-45 = 0

5*b-45 = 0

5*b-45 = 0 // + 45

5*b = 45 // : 5

b = 45/5

b = 9

b = 9

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