Question

−0,1d−9=−13
d=
Срочно пожалуйста!

Answer 1

-0,1d - 9 = -13

-0,1d = -4 | :(-0,1)

d = 40

Answer 2

– 0,1d – 9 = – 13

– 0,1d = – 13 + 9

– 0,1d = – 4

d = – 4 : ( – 0,1 )

d = 40