To determine which equation has a different value of x, we need to solve each equation for x and compare the values.
1) x + 0.875 = 1.5
Subtracting 0.875 from both sides, we get: x = 1.5 - 0.875 = 0.625
2) x + 9/8 = 7/4
Subtracting 9/8 from both sides, we get: x = 7/4 - 9/8 = 3.5/2 - 9/8 = 7/4 - 9/8 = 7/4 - 1.125 = 1.875
3) x - 7/8 = -3/2
Adding 7/8 to both sides, we get: x = -3/2 + 7/8 = -12/8 + 7/8 = -5/8
4) x - 0.025 = 0.6
Adding 0.025 to both sides, we get: x = 0.6 + 0.025 = 0.625
The equation x - 7/8 = -3/2 has a different value of x than the others, which is -5/8.