3х + 4у +1 = (х+у-2) + (2х + 3у +3), 2х= х+(2+х)

Question

3х + 4у +1 = (х+у-2) + (2х + 3у +3),
2х= х+(2+х)

Answer 1

3х + 4у +1 = (х+у-2) + (2х + 3у +3)
2х= х+(2+х)
3х+4у+1=х+у-2+2х+3у+3
3х+4у+1=3х+4у+1  тождество

х и у любые