exam Maths Puzzle Numerical Ability

Subtract. Simplify, if possible.

9/b-4 - 9/4-b

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exam Other Question

Solve by the elimination method.
4x + 3y = -14
x = 5 - 5y 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