Simplify dfrac6x+dfrac7x2\\dfrac{6}{x} + \\dfrac{7}{x^2}dfrac6x+dfrac7x2
dfrac6x+7x2\\dfrac{6x + 7}{x^2}dfrac6x+7x2
dfrac13x2\\dfrac{13}{x^2}dfrac13x2
dfrac6xx2\\dfrac{6x}{x^2}dfrac6xx2
dfrac6+7x+x2\\dfrac{6 + 7}{x + x^2}dfrac6+7x+x2