Answer:
3x + 6 < 21
subtract 6 on both sides
3x < 15
reduce by dividing with 3
x < 5
remember to handle inequalities just like equations
x ≤ 5
Step-by-step explanation:
3x+6<21
3x<21-6
3x<15
x<15/3
x<5
x≤5
