Question

Решите срочно дам 50 баллов !)

Answer 1

1) -x = -5/ 13

-x = -5/13 / (-1)

x = 5/13

2) x = 9/12

x = 3/4 = 0,75 (разделили обе части на 3)

3) x = -2 /(-4)

x = 1/2 = 0,5 (ибо "-" делить/умножить "-" = "+")

4) -2х - 5х = 30 - 16

-7х = 24 / (-7)

x = -24/7

5) -3х + 5х = -4 - 2

2х = -6 / 2

x = -3

6) -x = 12 / (-1)

x = -12

7) 8x - 2x - 3x = 9

3x = 9 / 3

x = 3

8) x = 1/3 + 1/4

x = 7/12

9) x = 1/2 + 2/1

x = 3/2

10) x = 2,5 - 7/9

x = 5/2 - 7/9

x = 31/18