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The expression that is not equivalent to the others is:
(p + 0) - 4/3 * 3/4
(p + 0) * 1 + 1/3 * 3
p - 3 + 2 * 1
(p * 1/4 * 4) - 1
(p + 0) - 4/3 * 3/4
(p + 0) - 4/3 * 3/4