Deduct, subtract mean to take away one quantity from another.
Deduct usually is used in reference to amounts (as of costs, payments, or credits).
- The cost of your uniform will be deducted from your wages.
- Ten points will be deducted for a wrong answer.
- If you will just sign here, we will arrange for your bank to deduct your payments automatically.
Subtract is used in reference to numbers or to figures obtained by a computation or calculation.
- 6 subtracted from 9 is 3.
- Mandy subtracted the date of birth from the date of death.