Respuesta :

mathstudent55

Answer:

u = 3/4

Step-by-step explanation:

7/8-7/2u=-7/4

Make a common denominator of 8 for all fractions.

7/8 - 28/8 u = -14/8

Multiply both sides by 8.

7 - 28u = -14

-28u = -21

u = -21/(-28)

u = 3/4

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