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Solve the equation: -13<3d+2<11

Solve the equation: -13<3d+2<11
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4 votes
Solve the equation: -13<3d+2<11

User Uuazed
by
7.9k points

2 Answers

4 votes
-13 < 3d + 2 < 11
-2 -2 -2
-15 < 3d < 9
3 3 3
-5 < d < 3
d ∈ (-5, 3)


User Oleksandr Kravchuk
by
8.0k points
3 votes

-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)
User Alexey Blinov
by
7.9k points
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