How do you solve #12> -3q# and #-2q> -12#?
1 Answer
Nov 3, 2017
Very carefully!
Explanation:
You need to be careful when dealing with inequalities and negative coefficients, as multiplying or dividing by a value which might be negative can invalidate the inequality.
The safest method is to add the variable terms to both sides to make their coefficients positive first:
and:
We can combine these two in a single interval:
