Question

1. 9 (5x + 13) -143 = 109 2. 15 (13x - 7) -191-94 3. (y + 46): 3-18 4. (2x + 39): 5 = 13 5. 182: (x - 15) -14 6. 2x + x = 48 7. 390: (4x + 3) = 26 8. 528: (5x - 7) = 16 9. 594: (8x - 55) = 18 10. 735: (6x + 17) = 21

Answer 1

Пошаговое объяснение:

1.

45х+117-143=109

45х=109+143-117

45х=135

х=3

2.

195х-105-191-94=0

195х=390

х=2

3.

у/3+46/3-18=0

у/3=54/3-46/3

у/3=8/3

у=8

4.

0.4х+7.8=13

0.4х=5.2

х=13

5.

182/(х-15)=14

182=14х-210

14х=392

х=28

6.

2х+х=48

3х=48

х=16

7.

390/(4х+3)=26

390=104х+78

104х=312

х=3

8.

528/(5х-7)=16

528=80х-112

80х=640

х=8

9.

594/(8х-55)=18

594=144х-990

144х=1584

х=11

10.

735/(6х+17)=21

735=126х+357

126х=378

х=3

Answer 2

To solve these equations, I'll show you the step-by-step solutions:

1. 9(5x + 13) - 143 = 109 45x + 117 - 143 = 109 45x - 26 = 109 45x = 109 + 26 45x = 135 x = 135 / 45 x = 3

2. 15(13x - 7) - 191 - 94 195x - 105 - 191 - 94 195x - 300 = 0 195x = 300 x = 300 / 195 x ≈ 1.538

3. (y + 46) / 3 - 18 (y + 46) / 3 = 18 y + 46 = 18 * 3 y + 46 = 54 y = 54 - 46 y = 8

4. (2x + 39) / 5 = 13 2x + 39 = 5 * 13 2x + 39 = 65 2x = 65 - 39 2x = 26 x = 26 / 2 x = 13

5. 182 / (x - 15) - 14 182 = 14(x - 15) + 14 182 = 14x - 210 + 14 182 = 14x - 196 14x = 182 + 196 14x = 378 x = 378 / 14 x = 27

6. 2x + x = 48 3x = 48 x = 48 / 3 x = 16

7. 390 / (4x + 3) = 26 390 = 26(4x + 3) 390 = 104x + 78 104x = 390 - 78 104x = 312 x = 312 / 104 x = 3

8. 528 / (5x - 7) = 16 528 = 16(5x - 7) 528 = 80x - 112 80x = 528 + 112 80x = 640 x = 640 / 80 x = 8

9. 594 / (8x - 55) = 18 594 = 18(8x - 55) 594 = 144x - 990 144x = 594 + 990 144x = 1584 x = 1584 / 144 x = 11

10. 735 / (6x + 17) = 21 735 = 21(6x + 17) 735 = 126x + 357 126x = 735 - 357 126x = 378 x = 378 / 126 x = 3

These are the solutions to the given equations.