How do I simplify the complex fraction

1/3 + 1/4
------------
1/3 - 1/4

1/3 + 1/4
------------
1/3 - 1/4

…4/12 + 3/12
= -----------------
…4/12 – 3/12

…(4 + 3)/12
= ---------------
…(4 – 3)/12

…7/12
= --------- multiplied by cross
…1/12

… 7(12)
= ---------
….1(12)

= 7/1
= 7

add 1/3 to 1/4 in the numerator section and then 1/3 - 1/4 on the denominator. If you want on the side you can also completely solve the answer

7

(7 / 12) / (1 / 12) = 84 / 12 = 7

(7/12) / (1/12) = 7