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I have an equation that looks like this | 2x-7| - 5 = 4 can any1 tell me what the two lines mean in the equation and how to solve it thanks!? Isn't it freaky that we are mixed clone of two people (our parents)? The specific gravity of gold is 19.What is the mass of 1cm3 of gold? What science can be done with a fidget spinner? Will the eclipse be visible in Florida?