Suma de fracciones

Add the following fractions and simplify the result

5
5
 +
7
3
 =
7
4
 +
6
2
 =
1
4
 +
3
2
 =
2
4
 +
3
2
 =
6
2
 +
2
7
 =
2
3
 +
5
4
 =
1
7
 +
2
3
 =
2
4
 +
6
7
 =

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