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The equation 2x + 3 = 2x + 7 has no solutions.
When we simplify the equation, we have:
2x + 3 = 2x + 7
By subtracting 2x from both sides, we get:
3 = 7
But 3 is not equal to 7, so there are no values of x that make this equation true. Hence, there are no solutions.