Question
PSLE
Carl sold (4z + 9) post-it pads on Wednesday. He sold z less post-it pads on Thursday than on Wednesday. How many post-it pads did he sell altogether? Give your answer in terms of z in the simplest form.
2 m

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PSLE
Carl sold (4z + 9) post-it pads on Wednesday. He sold z less post-it pads on Thursday than on Wednesday. How many post-it pads did he sell altogether? Give your answer in terms of z in the simplest form.