Сократите дробь . -8x^2/60xy; 48xy^2/-84x^2y ; b^15/b^9; a^20/a^10; x^7/x^21; y^12/y^18

Question

Сократите дробь . -8x^2/60xy; 48xy^2/-84x^2y ; b^15/b^9; a^20/a^10; x^7/x^21; y^12/y^18

Answer 1

1) -2x/15y
2) 4y/-7x
3) b^6
4) a^10