4(b-4)/5=2(b-1)/4

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Solution for 4(b-4)/5=2(b-1)/4 equation:


b in (-oo:+oo)

(4*(b-4))/5 = (2*(b-1))/4 // - (2*(b-1))/4

(4*(b-4))/5-((2*(b-1))/4) = 0

(4*(b-4))/5+(-1/2)*(b-1) = 0

(4*(b-4))/5-1/2*(b-1) = 0

(4*(b-4))/5+(-1/2*5*(b-1))/5 = 0

4*(b-4)-1/2*5*(b-1) = 0

3/2*b-27/2 = 0

(3/2*b-27/2)/5 = 0

(3/2*b-27/2)/5 = 0 // * 5

3/2*b-27/2 = 0

3/2*b-27/2 = 0 // + 27/2

3/2*b = 27/2 // : 3/2

b = 27/2/3/2

b = 9

b = 9

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