Which equation, when solved, results in a different value of x than the other three? -7/8x-3/4=20

3/4+7/8x=-20

-7(1/8)x-4/3=20

-7/8(-8/7)x-3/4=20(-8/7

I would have to say -7(1/8)x-4/3=20.

The first and the second one both result in
-23 5/7

The last one results in -24 8/21

but the third one is -22 3/8.

So your answer is either the third of the last one. I assumed the third because, it is lower than all others and the first two are closer to 24 than they are to 22. It’s your choice on how to judge it.

Hope i can you!