Solve for x
x\leq -10
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x+7\leq \frac{-9}{3}
Divide both sides by 3. Since 3 is positive, the inequality direction remains the same.
x+7\leq -3
Divide -9 by 3 to get -3.
x\leq -3-7
Subtract 7 from both sides.
x\leq -10
Subtract 7 from -3 to get -10.
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