Question

I made a mistake while solving the inequality below. What mistake did I make? Explain what I should’ve done instead.

Answer 1

Mistakes:

Used addition

Didn't flip inequality form

Corrections:

Divide each term

Instead of a positive value it should be negative

flip the direction of the inequality form

Explanation:

`- 9x / - 9 \leqslant 90 / – 9`

cancel the common factor

`* \leqslant 90 / - 9`

Divide 90 by – 9

Answer is:

`* \leqslant - 10`

Hope this helps!