Question

Define (x A y) to mean 2x – 3y.
Evaluate ((4 A 3) A (5 A 3))
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Answer 1

xAy=> 2x-3y

4A3=> 8-9=-1

5A3=>10-9=1

so answer becomes

-1A1 => -2 -3 =-5.

Hope this is what you were looking for...

Regards,

Olegion/Leukonov.