Please find the value Y in this given equation?

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http://ubuntuforums.org – Hello! Could I ask you a big favor? I need help . I have : 2x + [24-2 (y)] = 20 I tried to use Equation Solver here: http://www.numberempire.com/equation...var=y&answers= And I've got: y = x+2 It's the right answer, textbook shows me the same. But I want to understand the way to solve it. Please give me step by step explanation. Thanks in advance! (Hardware)