ТРЕНАЖЕР ПО ТЕМЕ « + и – числа» №6 Уравнения 1)-2-x=2 10)-8x=4 на 2)5x=-5 11)6x=-3 умножение 3)x(-5)=5 12)-4x=2 целых чисел 4)x(-4)=8 13)-2x=-1 5)-10x=20 14)20x=-4 6)7x=-14 15)-3x=1 7)x(-3)=6 16)9x=-3 8)-3x=18 17)x-(-5)=-2 9)x-2=-18 18)-5x=1

Ответ:

Разберем уравнения по порядку:

1. -2x = 2

   x = 2 / (-2)

   x = -1

2. 5x = -5

   x = -5 / 5

   x = -1

3. x(-5) = 5

   x = 5 / (-5)

   x = -1

4. x(-4) = 8

   x = 8 / (-4)

   x = -2

5. -10x = 20

   x = 20 / (-10)

   x = -2

6. 7x = -14

   x = -14 / 7

   x = -2

7. x(-3) = 6

   x = 6 / (-3)

   x = -2

8. -3x = 18

   x = 18 / (-3)

   x = -6

9. x ⋅ 2 = -18

   x = -18 / 2

   x = -9

10. -8x = 4

    x = 4 / (-8)

    x = -0.5

11. 6x = -3

    x = -3 / 6

    x = -0.5

12. -4x = 2

    x = 2 / (-4)

    x = -0.5

13. -2x = -1

    x = -1 / (-2)

    x = 0.5

14. 20x = -4

    x = -4 / 20

    x = -0.2

15. -3x = 1

    x = 1 / (-3)

    x = -1/3

16. 9x = -3

    x = -3 / 9

    x = -1/3

17. x ⋅ (-5) = -2

    x = -2 / (-5)

    x = 0.4

18. -5x = 1

    x = 1 / (-5)

    x = -0.2

Ответ: