Question

Помогите пожалуйста!)

Answer 1

Ответ:

1)х+3=-9х

10х=-3

х= -3/10

х=-0,3

2)-3х-9=2х

-5х=9

х= -9/5

х= -1,8

3)

3)$6x + 1 = - 4x \\ 10x = - 1 \\ x = - \frac{1}{10} \\ x = - 0.1$

4)-2х-4=3х

$- 2x - 4 = 3x \\ - 5x = 4 \\ x = - \frac{4}{5} \\ x = - 0.8$

5)

$3x + 3 = 5x \\ - 2x = - 3 \\ x = \frac{ - 3}{ - 2 } \\ x = 1.5$

6)

$- 8x - 3 = - 6x \\ - 2x = 3 \\ = - 1.5$

7)

$7 + 8x = - 2x - 5 \\ 10x = - 12 \\ x = - 1.2$

8)

$- 5 + 9x = 10x + 4 \\ - x = 9 \\ x = - 9$

9)

$1 - 10x = - 5x + 10 \\ - 5x = 11 \\ x = - \frac{11}{5} \\ x = - 2.2$

10)

$- 4 - 6x = 4x - 3 \\ - 10x = 1 \\ x = - 0.1$

11)

$2 + 3x = - 7x - 5 \\ 10x = - 7 \\ x = - 0.7$

12)

$- 1 - 3x = 2x + 1 \\ - 5x = 2 \\ x = \frac{ - 2}{5} \\ x = - 0.4$

13)

$4(x - 8) = - 5 \\ 4x - 32 = - 5 \\ 4x = 27 \\ x = \frac{27}{4} \\ x = 6.75$

14)

$10(x - 9) = 7 \\ 10x - 90 = 7 \\ 10x = 97 \\ x = 9.7$

15)

$5(x + 9) = - 8 \\ 5x + 45 = - 8 \\ 5x = - 53 \\ x = - \frac{53}{5} \\ x = - 10.6$

16)

$4(x + 1) = 9 \\ 4x + 4 = 9 \\ 4x = 5 \\ x = 1.25$

17)

$10(x + 2) = - 7 \\ 10x + 20 = - 7 \\ 10x = - 27 \\ x = - 2.7$

18)

$5(x - 6) = 2 \\ 5x - 30 = 2 \\ 5x = 32 \\ x = 6.4$

19) приводим к общему знаменателю - 9

$x + \frac{x}{9} = - \frac{10}{3} \\ \frac{9x}{9} + \frac{x}{9} = - \frac{30}{9} \\ 9x + x = - 30 \\ 10x = - 30 \\ x = - 3$

20) приводим к общему знаменателю - 7

$x - \frac{x}{7} = 6 \\ 7x - x = 42 \\ 6x = 42 \\ x = 7$

21) приводим к общему знаменателю - 5

$x + \frac{ x}{5} = - \frac{12}{5} \\ 5x + x = - 12 \\ 6x = - 12 \\ x = - 2$

22) приводим к общему знаменателю - 12

$x - \frac{x}{12} = \frac{11}{3} \\ 12x - x = 44 \\ 11x = 44 \\ x = 4$

23)приводим к общему знаменателю - 2

$x + \frac{x}{2} = - 9 \\ 2x + x = - 18 \\ 3x = - 18 \\ x = - 6$

24)приводим к общему знаменателю - 11

$x - \frac{x}{11} = \frac{24}{11} \\ 11x - x = 24 \\ 10x = 24 \\ x = 2.4$