Subtract: 3x+1x2+x−2x\dfrac{3x + 1}{x^2 + x} - \dfrac{2}{x}x2+x3x+1−x2.
x−1x(x+1)\dfrac{x - 1}{x(x+1)}x(x+1)x−1
x+1x(x+1)\dfrac{x + 1}{x(x+1)}x(x+1)x+1
3x−1x(x+1)\dfrac{3x - 1}{x(x+1)}x(x+1)3x−1
1x+1\dfrac{1}{x+1}x+11