(3a)3·(4b)-2·(10c)4/(5b)3·(2a)2·(9d)2
= 33·a3·4-2·b-2·104·c4/53/b3·22·a2·92·d2
= 27·a3·1/16/b2·10000·c4/125/b3·4·a2·81·d2s
= 27·10000·4·81·a3·c4·a2·d2/(16·125·b2·b3)
= 87480000·a5·c4·d2/(2000·b5)
= 43740a5c4d2/b5
Zumindest wenn du korrekt geklammert hast.
