докажите,что разность выражения 3(х+у)+3х+7 и выражения 6(х+у)-3у+5 не зависит от - №19714826

докажите,что разность выражения 3(х+у)+3х+7 и выражения 6(х+у)-3у+5 не зависит от значения переменных х и у
- Предмет:
  Математика
- Автор:
  carleyelliott
- 5 лет назад

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Read and translate the text.
My working day My typical working day usually begins at 7 o'clock. I get up, make my bed, open the window and make my morning exercises. Then I go to the bathroom. I clean my teeth and wash myself. Usually I have breakfast at home. I go to the kitchen and make breakfast for myself. For breakfast I usually have a cup of tea or coffee, cheese or eggs, bread and butter. After that I get dressed, take my bag and go to the Institute. I live not far from my Institute and it takes me ten minutes to get there. The lessons begin at eight o'clock and we usually have five or six lessons every day. We have many subjects at the Institute, but my favourite subjects are English, Russian, Physical Training and Mathematics. After classes I go home and have dinner at two o'clock. After dinner I have a short rest, watch TV and then I do my homework. We have many subjects at the Institute and it takes me one or even two hours to do my homework. If the hometasks are big I do them in the evening, too. Sometimes I go for a walk with my friends. Sometimes I go to the library if I need some books for my studies. When my parents come home from work in the evening we have supper. After supper we go to the sitting room and watch TV or read something. Twice a week I go to the swimming pool. As a rule I haven't much free time on my week-days. At about eleven o'clock I begin to feel sleepy, so I go to my bedroom and go to bed.
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- 5 лет назад
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