Question: Add or subtract and, if possible, simplify. (a) 7 / 5x + 3 / 5x (b) 7 / 12y - 1 / 12y (c) 4

Add or subtract and, if possible, simplify.
(a) 7 / 5x + 3 / 5x
(b) 7 / 12y - 1 / 12y
(c) 4 / 3a + 4 + 3a / 3a + 4

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