$m \lt 10$
Work Step by Step
Distribute 2 to get $\\\\2m-6+7 \lt 21 \\\\2m+1 \lt 21$. $\\\\\\$Subtract 1 from both sides to get $\\\\2m \lt 20$. $\\\\\\$Divide both sides by 2 to get $\\\\m \lt 10$.
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