Solving them, it is found that the equivalent equations are given as follows: 2 + x = 5, x + 1 = 4, -5 + x = -2.
Equivalent equations are equations that have the same solution.
In this problem, the equations and their solutions are given as follows.
Hence the equivalent equations are: 2 + x = 5, x + 1 = 4, -5 + x = -2.
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