Tolong di jabarkan! Bentuk sederhana dari :

DIRGAHAYU RI KE 72 !!!
Jayalah Indonesiaku !!!


7x² y^-3 z²/ 54x^-1 y^-5 z^-4
= 7/54 x^2+1 y^-3+5 z^2+4
= 7/54 x^3 y^2 z^6

27 x y^-1 z^-8 /84 x^-6 y^4 z^-2
= 27/84 x^1+7 y^-1-4 x^-8+2
= 27/ 84 x^8 y^-5 z^-6

7/54 * 27/84 (x^3+8 y^2-5 z^6-6)
= 7/6 * 3/84 (x^11 y^-3 z^0)
= 21 x^11 / 504y^3