so we'd solve this like ;
1/8 + 1/12 = 1 /x ( now we have to get the same denominators for adding)
1*3/8*3 = 3/24
1*2/12*2 = 2/24 ( now we'll arrange them and add)
3/24 + 2/24 = 1/x
5/24 = 1/x ( now take the one to the other side which will then give us our x )
x = 24/5 * 1 (now we'll simply just multiply)
x = 24/5
x = 4 . 8 ANSWER
i hope uve understood by now and if not then pls be free to ask!
i hope this helps!