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Secondary 1 | Maths
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Duane Loh
Duane Loh

Secondary 1 chevron_right Maths

Inequalities thanks

Date Posted: 2 years ago
Views: 79
Kger Liang
Kger Liang
2 years ago
-2x+2>-18
-2x>-20
2x <20. (Because -3 > -5 but 3 < 5)
x <10

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Galvin Ng
Galvin Ng's answer
3 answers (Tutor Details)
1st
Enjoy!
Duane Loh
Duane Loh
2 years ago
Thanks so much
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Christmas MT
Christmas Mt's answer
658 answers (A Helpful Person)
Inequality sign changes direction when you are multiplying the equation by a negative number (in this case, -1).

Imagine -4 > -20
When you multiply both sides by -1, it should become
4 < 20, not 4 > 20

Everything else should be quite clear :)