• Предмет: Алгебра
  • Автор: domanov1996
  • Вопрос задан 9 лет назад

найдите корни уравнений.
4-x=5x+22
5y+18=8y
16-2x=3x
42-2x=5x
3x+18=5x
5y-22=3y
3x+38=5x+18
7y-5=3y+3
6x-45=2x-17
3-3y=7-13y
3x-2=7-x

Ответы

Ответ дал: Chemist0
0
4-x = 5x + 22

-x - 5x = 22 - 4

-6x = 18

x = -3

5y + 18 = 8y

5y - 8y = -18

-3y = -18

y = 6

16 - 2x = 3x

-2x - 3x = -16

-5x = -16

x = 3.2

42 - 2x = 5x

-2x - 5x = -42

-7x = -42

x = 6

3x + 18 = 5x

3x - 5x = -18

-2x = -18

x = 9

5y - 22 = 3y

5y - 3y = 22

2y = 22

y = 11

3x+38=5x+18

3x - 5x = 18 - 38

-2x = -20

x = 10

7y - 5 = 3y + 3

7y - 3y = 3 + 5

4y = 8

y = 2

6x - 45 = 2x - 17

6x - 2x = -17 + 45

4x = 28

x = 7

3-3y=7-13y

-3y + 13y = 7 - 3

10y = 4

y = 0,4

3x - 2 = 7 - x

3x + x = 7 + 2

4x = 9

x = 2.25
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