Answer:
a. -10
Step-by-step explanation:
6 - 2x <= 12 or 7 + 2x < -11
Lets look at the first one first
6 - 2x <= 12
Subtract 6 from each side
6-6 -2x <= 12-6
-2x <= 6
Divide by -2, remembering to flip the inequality
-2x/-2 <=6/-2
x >=-3
Now we solve the second one
7 + 2x < -11
Subtract 7 from each side
7-7 + 2x <-11-7
2x <-18
2x/2 <-18/2
x <-9
Answer x <-9 or x>= -3
-10 is <-9 so it is a solution
