- Subtract: 3xy -5yz -7zx from 12a − 9ab + 5b -3
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Subtract: 3xy -5yz -7zx from 12a − 9ab + 5b -3
12a - 9ab + 5b - 3 - ( 3xy - 5yz - 7zx )
12a - 9ab + 5b - 3
- 3xy + 5yz + 7zx
= 12a - 9ab + 5b - 3 - 3xy + 5yz + 7zx.
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