Question
PSLE
Ivory had 4z guavas. She bought another 9 guavas and received 3z guavas from her cousins. Ivory's sisters then ate half of the remaining guavas. How many guavas had she left? Give your answer in terms of z in the simplest form.
2 m

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PSLE
Ivory had 4z guavas. She bought another 9 guavas and received 3z guavas from her cousins. Ivory's sisters then ate half of the remaining guavas. How many guavas had she left? Give your answer in terms of z in the simplest form.