(28a+7,7b)/30000=15

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Solution for (28a+7,7b)/30000=15 equation: 


x in (-oo:+oo)

(28*a+7.7*b)/30000 = 15 // - 15

(28*a+7.7*b)/30000-15 = 0

(28*a+7.7*b)/30000+(-15*30000)/30000 = 0

28*a+7.7*b-15*30000 = 0

28*a+7.7*b-450000 = 0

(28*a+7.7*b-450000)/30000 = 0

(28*a+7.7*b-450000)/30000 = 0 // * 30000

28*a+7.7*b-450000 = 0

x belongs to the empty set

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