Respuesta :

Answer:

minus a negative number meand that u are adding its inverse so the equation would look like 4d+1=13. from there u isolate d

4d+1=13

-1 -1

4d=12

d=3

EmJade
4d - (-1) = 13 Original Problem
+ 1 = +1 Trying to isolate d
4d = 14 Div. by 4, both sides
—— —-
4 4
d = 3.5 Answer

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