3/5x+2 + 5x/25x2 - 4

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  1. Please insert parentheses around all numerators and denominators.
    Missing parentheses is the cause of many math mistakes.

    I assume that the expression is to be simplified, and is:
    3/(5x+2) + 5x/(25x2-4)
    =3/(5x+2) + 5x/((5x+2)(5x-2))
    =(3(5x-2)+5x)) / ((5x+2)(5x-2))
    =(20x-6) / ((5x+2)(5x-2))
    =2(10x-3) / ((5x+2)(5x-2))

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