Question

Пж помагите............... ​

Answer 1

Ответ:

Пошаговое объяснение:

7х + 3 - ( 8х + 4) = 7х + 3 - 8х - 4= -х -1

6 - 9х + (7х - 4) = 6 - 9х + 7х - 4= - 2х + 2

5х - 4 - (-6х + 2) = 5х - 4 + 6х - 2 = 11х - 6

10 + 10х - (6х - 7) = 10 + 10х - 6х + 7= 4х + 17

15 + 2х + (7х -4) = 15 + 2х + 7х - 4 = 9х + 11

-1 - 2х - ( 6х - 4) = -1 -2х - 6х + 4 = -8х  + 3

2)

5 - 8х = 5 - 8 * 6 3/4 = 5 - 8 * 27/4 = 5 - 54 = - 49

2х + 6 = 2 * 1 5/6 + 6 = 2 * 11/6 + 6 = 11/3 + 6 = 3 2/3 + 6 = 9 2/3

7х - 3 = 7 * 3 2/9  - 3 = 7 * 29/9 - 3 = 203/9 - 3 = 22 5/9 - 3 = 19 5/9