Marco made 2 errors in solving the following inequality. Identify the mistakes and correctly solve. -18 - 4y > 20 -4y > 2 y > -1/2

Question

asked Feb 25, 2022 136k views

1 Answer

LeBleu · Answer 1 · 2022-03-01T06:56:29+0000

Answer:

Explanation:

When moving -18 to the other side, he didn’t do 20 + 18. (Mistake 1)

When dividing 2/-4 he didn’t flip the inequality from > to <. (Mistake 2)

Correct:

$-18-4y<20\\-4y<38\\y > -9.5 (or -4(1)/(2)$