Solve for d
d\leq -5
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d+7\leq \frac{6}{3}
Divide both sides by 3. Since 3 is positive, the inequality direction remains the same.
d+7\leq 2
Divide 6 by 3 to get 2.
d\leq 2-7
Subtract 7 from both sides.
d\leq -5
Subtract 7 from 2 to get -5.
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Limits
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