Question

помогите срочно пожалуйсто дам 20 балов спасибо​

Answer 1

Ответ:

Пошаговое объяснение:

1) 3x - 15 = x + 3

3x - x = 3 + 15

2x = 18

x = 9

2) 7 - 3x =  x + 11

-3x - x = 11 - 7

-4x = 4

x = -1

3) 2(x + 3) = x + 13

2x + 6 = x + 13

2x - x = 13 - 6

x = 7

4) 4(5 - x) = 3x - 1

20 - 4x = 3x - 1

-4x - 3x = -1 - 20

-7x = -21

x = 3

5) 3(x - 2) = x + 4

3x - 6 = x + 4

3x - x = 4 + 6

2x = 10

x = 5

6) 5(x - 1) = 4x + 3

5x - 5 = 4x + 3

5x - 4x = 3 + 5

x = 8