Cómo resolver Let A = 20% of x + 80% of y and B = 70% of x + 30% of y where x is greater than y. If k% of (x - y) is (B - A) then what is the value of k? (1) 30 (2) 50 888 ( 3) 20 129. Consider the following statements :

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1. Factor the equation (x + 2)(x + 3) = 0. 2. Set each factor equal to zero: x + 2 = 0 and x + 3 = 0. 3. Solve for x: x = -2 and x = -3.

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