exam Maths Puzzle Numerical Ability

The identity element for the operation of subtraction is:

a. 1
b. 0
c. there is no identify element for the subtraction operation
d. depends on which numb

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exam Other Question

Subtract. Simplify, if possible.

9/b-4 - 9/4-b
Kim has $210 in $5 bills and $20 bills. She has a total of 24 bills. How many $5 bills and how many $20 bills does she have?

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