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To find the solution with the lowest value, we need to solve each equation and compare the value of x.
1) x - 7 = 28
Adding 7 to both sides, we get x = 35.
2) x + 19 = -5
Subtracting 19 from both sides, we get x = -24.
3) x - 6 = -16
Adding 6 to both sides, we get x = -10.
4) x + 25 = 2
Subtracting 25 from both sides, we get x = -23.
The equation with the solution of the lowest value is x = -24 (equation 2).