Question: What is the best answer for this? Define the binary operation * on the set of rational numbers as : a*b = ab + a

What is the best answer for this?

What is the best answer for this? Define the binary operation *

Define the binary operation * on the set of rational numbers as : a*b = ab + a - b. Compute for the value of (2*3)*4. O 13 O 24 0 9 O 21

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