Translate to an expression: 'the sum of a number xxx and its reciprocal'.
x+frac1xx + \\frac{1}{x}x+frac1x
x−frac1xx - \\frac{1}{x}x−frac1x
fracx+1x\\frac{x+1}{x}fracx+1x
frac1x+1\\frac{1}{x+1}frac1x+1