Question

Find the student's error in solving the following

inequality.
31 <-5x + 6
25 <-5x
-5

Answer 1

x>7

Explanation:

when dividing by a (-)

the inequality sign changes

Answer 2

"The student should have switched the direction of the inequality sign to get –5> x for a final answer."

and the second one is:

The student should have added 4 to all parts (left, middle, and right) to get 6 < –3x < 9.

Explanation:

i got that on edge