Which pair of expressions are equivalent? 3 v 5 minus 9 v 2 and negative 6 v 6 Negative 6 n 3 minus 2 n 2 and negative 8 n 6 Negative 4 n 8 9 n minus 2 and 5 n 6 10 n minus 5 minus 2 n 3 and 5 n minus 2