Equivalent equation

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

A. 87x43=20
Negative 7/8 x minus three-fourths = 20

B. 43+87x=20
Three-fourths + 7/8 x = negative 20

C. 781x3/4=20
Negative 7 ( 1/8 ) x minus three-fourths = 20

D. 87(78x)43=20(78)
Negative 7/8 (Negative 8/7 ) x minus three-fourths = 20 (Negative 8/7 )

Correct answer:

w = D

Step-by-step explanation:

7/8 a3/4=20  7a=166  a=7166=23.71428571  a=716623.714286  3/4+7/8 b=20  7b=166  b=7166=23.71428571  b=716623.714286  7 1/8 c3/4=20  7c=166  c=7166=23.71428571  c=716623.714286  7/8 (8/7 d)3/4=20 (8/7)  56d=1238  d=561238=22.10714286  d=2861922.107143  a=b=c  w=D

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