Question

1) 4х = 24+ х; 2) 8х – 8 = 20 – 6х; 3) 0,6х – 5,4 = -0,8х + 5,8; 4) 4(х -3) = х +6; 5) 4 – 6(х +2) = 3 – 5х, 6) 7(4х -1) = 6 – 2(3 -14х)

Answer 1

Ответ:

Пошаговое объяснение:

1. 4х = 24+ х

4х-х=24

3х=24

х=24:3

х=8

2. 8х – 8 = 20 – 6х;

8х+6х=20+8

14х=28

х=28:14

х=2

3. 0,6х – 5,4 = -0,8х + 5,8

0.6х+0.8х=5.8+5.4

1.4х=11.2

х=11.2:1.4

х=8

4. 4(х -3) = х +6

4х-12=х+6

4х-х=6+12

3х=18

х=18:3

х=6

5. 4 – 6(х +2) = 3 – 5х

4-6х-12=3-5х

-6х+5х=3-4+12

-1х=11

х=11:(-1)

х= -11

6. 7(4х -1) = 6 – 2(3 -14х)

28х-7=6-6+28х

28х-28х=6-6+7

0х=7

У уравнения нет корней.

Answer 2

1) 4x = 24 - x 4x + x = 24 5x = 24 x = 24 / 5 x = 4.8

2) 8x - 8 = 20 - 6x 8x + 6x = 20 + 8 14x = 28 x = 28 / 14 x = 2

3) 0.6x - 5.4 = -0.8x + 5.8 0.6x + 0.8x = 5.8 + 5.4 1.4x = 11.2 x = 11.2 / 1.4 x = 8

4) 4(x - 3) = x + 6 4x - 12 = x + 6 4x - x = 6 + 12 3x = 18 x = 18 / 3 x = 6

5) 4 - 6(x + 2) = 3 - 5x 4 - 6x - 12 = 3 - 5x -6x + 5x = 3 - 4 + 12 -x = 11 x = -11

6) 7(4x - 1) = 6 - 2(3 - 14x) 28x - 7 = 6 - 6 + 28x 28x - 28x = -7 0 = -7

Уравнение 6) не имеет решения.