AC Lim's answer to LynnWynn Ng's Secondary 2 Maths Singapore question.
done
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Refer ti red pen. Hope this helps
Date Posted:
3 years ago
The ideas of Equation (1) x3 is to eliminate the y as equation (2) have -9y. Therefore when we plus 9y + (-9y) = 0, we have 1 only unknown as x, then solve x value and y later.
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