Представьте выражение в виде суммы одночленов:
3xr+xy+45+2/4tv

In honor of the birthday sing songs, dance, play a variety of fun and games. very often it happens sometimes even if the birthday boy is a child, it is dressed in a smart suit, bake a cake or pie and put a candle in it, as much as he or she turns today. dozhzhen child blow out the candles, preferably the first time and make a wish. back in russia, there is a ritual, rather a tradition - the birthday wag his ears as many times as this year he was years

Готово...............

6х+5у=4
5х+3у=1. Домножим первое уравнение на -3, а второе на 5. Получим:
-18х-15у=-12
25х+15у=5. Делаем сложение: Получаем:
7х=-7. Отсюда х=-1.
Подставляем значение х в любое из уравнений:
-5+3у=1; 3у=6; у=2.