Hope made 333 different yo-yos. She used 1\dfrac341
4
3

1, start fraction, 3, divided by, 4, end fraction meters of string for the first yo-yo, 111 meter of string for the second yo-yo, and a total of 4\dfrac134
3
1

4, start fraction, 1, divided by, 3, end fraction meters of string.
Hope uses the equation, 1\dfrac34+1+y=4\dfrac131
4
3

+1+y=4
3
1

1, start fraction, 3, divided by, 4, end fraction, plus, 1, plus, y, equals, 4, start fraction, 1, divided by, 3, end fraction to represent the situation.
What does the variable yyy represent in the equation?