7.4=(100-x)/x

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Solution for 7.4=(100-x)/x equation: 


D( x )

x = 0

x = 0

x = 0

x in (-oo:0) U (0:+oo)

7.4 = (100-x)/x // - (100-x)/x

7.4-((100-x)/x) = 0

(-1*(100-x))/x+7.4 = 0

(-1*(100-x))/x+(7.4*x)/x = 0

7.4*x-1*(100-x) = 0

8.4*x-100 = 0

(8.4*x-100)/x = 0

(8.4*x-100)/x = 0 // * x

8.4*x-100 = 0

8.4*x-100 = 0 // + 100

8.4*x = 100 // : 8.4

x = 100/8.4

x = 11.9047619

x = 11.9047619

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