Question
PSLE
Risa had 7z pears. She bought another 5 pears and received 4z pears from her cousins. Risa's sisters then ate half of the remaining pears. How many pears had she left? Give your answer in terms of z in the simplest form.
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PSLE
Risa had 7z pears. She bought another 5 pears and received 4z pears from her cousins. Risa's sisters then ate half of the remaining pears. How many pears had she left? Give your answer in terms of z in the simplest form.