Решите x-2y-(3x-5y-(y-2x-(x+y)))

Question

Решите x-2y-(3x-5y-(y-2x-(x+y)))

Answer 1

Х-2у-(3х-5у-(у-2х-х-у)=х-2у-(3х-5у-у+2х+х+у)=х-2у-3х+5у+у-2х-х-у=-5х+3у

Comments

-5x+3y