To solve the inequality 9x+3<21, we must isolate x on one side of the inequality symbol.
Starting with 9x+3<21, we can begin by subtracting 3 from both sides:
9x+3-3<21-3
9x<18
Next, we divide both sides of the inequality by 9 to isolate x:
(9x)/9<18/9
x<2
So the solution to the inequality 9x+3<21 is x<2.
9x+3<21
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