Nur's answer to Troubled's Secondary 3 E Maths Singapore question.
done
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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
it is 8 because (20-4)/2
Date Posted:
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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