Question

Solve 5 - 2x < 7.
A) x < -1
B) x > -1
C) x < -12
D) x > -12

Answer 1

First off we subtract 5 from both sides like this:
5-2x-5<7-5
solve -2x<2
multiply both sides by -1
-2x*-1>2*1 (note that the "<" sign will change when theres a negative)
slove
2x>-2
Now divide both sides by 2
2x/2 >-2/2
solve (2x/2 will be crossed out and -2/2 is -1)
Answer:
x>-1, B

Answer 2

@eatsalad