2. Subtract:
(1) 2x-3y -z from 2-4x-6y
fü) y-6y - 3y + 4y' from 6y - 3y + 2y + 3y + 8
(iii) 7x-8y +42-5w from x + y + 7 - 8x + 7y-52-5w
(iv) 52 -3yz+ 2y from 10y -2yz-32
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AO AO si si sup sup sup ati dop di zip di dop dop dop dop dop si
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