Question

Given that x⊗y=x⋅y-3

and that x⊙y=5⋅(x-y)

Evaluate this expression:(5⊗(4⊗3))⊙(-5)

Answer 1

its of all solve inner bracket
therefore x = 4 , y = 3
4.3-3 = 9
then it would become 5⊗9
that means x= 5 and y= 9 of the same equation
5.9-3= 42
it becomes
42⊙-5
x= 42 , y = -5
5 ( 42-(-5))
5.47= 235

Answer 2

correct