(a-1400)/a=0.2

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Solution for (a-1400)/a=0.2 equation: 


D( a )

a = 0

a = 0

a = 0

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

(a-1400)/a = 0.2 // - 0.2

(a-1400)/a-0.2 = 0

(a-1400)/a+(-0.2*a)/a = 0

a-0.2*a-1400 = 0

0.8*a-1400 = 0

(0.8*a-1400)/a = 0

(0.8*a-1400)/a = 0 // * a

0.8*a-1400 = 0

0.8*a-1400 = 0 // + 1400

0.8*a = 1400 // : 0.8

a = 1400/0.8

a = 1750

a = 1750

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