student-name

Teo Laura asked in Math

If a © b = 6 x a − 3 x b, find the value of (5 © 4) © 20.

Thank You
student-name

Yash Ranjan Mishra answered this

Dear student
given a © b = 6*a - 3*b
to find (​​5©4)©20
so 5©4 = 6*5 - 3*4 = 30 - 12 = 18
so  (​​5©4)©20 = 18©20 = 6*18 - 3*20 = 108 - 60 = 48
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