Respuesta :

Answer:

-1+13=4v

12=4v

v=3

....

.............

-1 = 4v - 13
add 13 on both sides
-1 + 13 = 4v - 13 + 13
12 = 4v
divide by 4 on both sides
12/4 = 4v/4
v = 3
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