Respuesta :

Answer: a=-5/4

Step-by-step explanation:

-1/4+3/4a=7/4a+1

-1+3a=7a+4

3a-7a=4+1

-4a=5

a=-5/4

answer: -5/4

-1/4+3/4a=7/4a+1-1+3a=7a+43a-7a=4+1-4a=5a=-5/4
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