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secondary 3 | E Maths
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Troubled
Troubled

secondary 3 chevron_right E Maths chevron_right Singapore

Can someone pls help to explain why (b) answer is not -9 but -7? I do not understand. Thank you very much!

Date Posted: 1 year ago
Views: 114

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Nur
Nur's answer
140 answers (Tutor Details)
1st
there is a change of sign because initially it was a negative x , in order to make it positive x the sign have to change the opposite way

it is 8 because (20-4)/2
Troubled
Troubled
1 year ago
Thanks but u did not answer my question. I ask why the answer fir (b) is -7 and not -9?
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Arnold K H Tan
Arnold K H Tan's answer
2090 answers (A Helpful Person)
The correct answer for part b) is -9. The person who created the worksheet entered the wrong answer of -7