WILL GIVE SHINY MEDAL

3x less than or equal to 21

A) x less than or equal to 7
B) x greater than or equal to 7
C) x less than or equal to 18
D) x greater than or equal to 18

Question

WILL GIVE SHINY MEDAL

3x less than or equal to 21

A) x less than or equal to 7
B) x greater than or equal to 7
C) x less than or equal to 18
D) x greater than or equal to 18

sammixboo · Answer

$\rm \color{#20bd23}{3x \le 21}$

All you need to to is divide both sides of the equation by 3

$\rm \color{#20bd23}{3x\div 3 \le 21\div 3}$

$\rm \color{#20bd23}{x \le 21\div 3}$

sammixboo · Answer

Now what is $\rm \color{#20bd23}{21\div 3}$?

anonymous · Answer

7

sammixboo · Answer

Correct, so $\rm \color{#20bd23}{x \le 7}$

sammixboo · Answer

Or x is less than or equal to 7

anonymous · Answer

thx!