Solve for m
m\geq -180
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-60\times 3\leq m
Multiply both sides by 3. Since 3 is positive, the inequality direction remains the same.
-180\leq m
Multiply -60 and 3 to get -180.
m\geq -180
Swap sides so that all variable terms are on the left hand side. This changes the sign direction.
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