karamyers2015
karamyers2015
20-03-2015
Mathematics
Answered
solve the equation: -13<3d+2<11
Answer :
Аноним
Аноним
20-03-2015
[tex]-13 < 3d+2 < 11\ \ \ \ |subtract\ 2\ from\ both\ sides\\\\-15 < 3d <9\ \ \ \ \ |divide\ both\ sides\ by\ 3\\\\-5 < d < 3\Rightarrow d\in(-5;\ 3)[/tex]
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Panoyin
Panoyin
22-03-2015
-13 < 3d + 2 < 11
-2 -2 -2
-15
<
3d
<
9
3 3 3
-5 < d < 3
d ∈ (-5, 3)
Answer Link
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