How do you solve something like this?

-2x - 3 ≥ 21

Question

How do you solve something like this? 

-2x - 3 ≥ 21

anonymous · Answer

Same way you solve a normal equation, but if you multiply or divide by a negative number, you have to switch the direction of the inequality symbol.

geometry_hater · Answer

Just do it as normal

Get x by itself

anonymous · Answer

add 3 to both sides = -2x ≥ 24 , now divide by -2 to isolate x , giving you x LESS THAN OR EQUAL TO  (sign flips when dividing by negatives) -12

anonymous · Answer

Thanks everyone! Makes sense now. That was easy :)

anonymous · Answer

-2x - 3 -2x - 3 ≥ 21 21 Add 3 to both sides
      +3     +3
------------
-2x ≥ 24 Divide by - 2
/-2    /-2
---------
x ≥ 12