tolong di jelaskan ya

3√(3/2) + 5√(72/27) - √54 ======> 72/27 = 8/3
= 3 √(3/2) + 5 √(8/3) - √(9 . 6)
= 3 √3/√2 + 5√(4 . 2)/√3 - 3√6
= 3 √3/√2 . √2/√2 + 5 . 2√2/√3 . √3/√3 - 3√6
= (3√6)/2 + (10√6)/3 - 3√6
= (9√6)/6 + (20√6)/6 - (18√6)/6
= (11√6)/6
= 11/6 √6