1 Answer

Zsolt · Answer 1 · 2017-06-09T18:40:57+0000

y-8 < 10
⇒ y < 10+ 8
⇒ y < 18

The correct answer is y < 18.

Kim might have forgotten to change the sign of 8 since she moved the number 8 from the left to the right side.

Hope this helps~

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