15а⁶в³/25а⁴в⁷=3а²/5в⁴
(3х+1)/2х+(х-8)/2х=(3х+1+х-8)/2х=(4х-7)/2х
(27в/2а)*(5а/3)=45в/2
ху/(х-2у)+2х/(4х-8у)=ху/(х-2у)+2х/4(х-2у)=ху/(х-2у)+х/2(х-2у)=(2ху+х)/2(х-2у)=х(2у+1)/2(х-2у)
15а⁶в³/25а⁴в⁷=3а²/5в⁴
(3х+1)/2х+(х-8)/2х=(3х+1+х-8)/2х=(4х-7)/2х
(27в/2а)*(5а/3)=45в/2
ху/(х-2у)+2х/(4х-8у)=ху/(х-2у)+2х/4(х-2у)=ху/(х-2у)+х/2(х-2у)=(2ху+х)/2(х-2у)=х(2у+1)/2(х-2у)