Which equation, when solved, results in a different value of x than the other three?

As written, the choices do not have a single equation with a different solution. In B and C, solving gives x = −166/7. In A, the coefficient −7/8 × (−8/7) becomes 1, so x − 3/4 = −160/7 and x = −619/28. In D, interpreting −7 1/8 as the mixed number −57/8 gives x = −166/57. Thus both A and D differ from B and C.

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