Solve for d
d<6
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4d<18+6
Add 6 to both sides.
4d<24
Add 18 and 6 to get 24.
d<\frac{24}{4}
Divide both sides by 4. Since 4 is positive, the inequality direction remains the same.
d<6
Divide 24 by 4 to get 6.
Examples
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Matrix
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Limits
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