Question

1. 259 – 3x = 190 2. 14x – 193 = 7173. 24x + 217 = 5294. (135 – 31x)2 = 225. 18(5x – 14) = 4686. (241 + 139) * (2x - 247) = 201407. 3x: 43 = 38. 135: 5x = 3​

Answer 1

Ответ:

1. х=23

2. х=65

3. х=13

4. х=4

Пошаговое объяснение:

1. 259 – 3x = 190

-3х=190-259

-3х=-69

х=-69:(-3)

х=23

2. 14x – 193 = 717

14х=717+193

14х=910

х=910:14

х=65

3. 24x + 217 = 529

24х=529-217

24х=312

х=312:24

х=13

4. (135 – 31x)2 = 22

270-62х=22

-62х=22-270

-62х=-148

х=-148 : -62

х=4

Answer 2

Ответы:

1)259-3x=190. 2)14x-193=717

3x=259-190. 14x=717+193

3x=69. 14x=910

x=69:3. x=910:14

x=23 x=65

3)24x+217=529

24x=529-217

24x=312

x=312:24

x=13

4)(135-31x)2=22

135-31x=22:2

135-31x=11

31x=135-11

31x=124

x=124:31

x=4

5)18(5x-14)=468

5x-14=468:18

5x-14=26

5x=26+14

5x=40

x=40:5

x=8

6)(241+139)•(2x-247)=20140

380• (2x-247)=20140

2x-247=20140:380

2x-247=53

2x=53+247

2x=300

x=300:2

x=150

7)3x:43=3

3x=3•43

3x=129

x=129:3

x=43

8)135:5x=3

5x=135:3

5x=45

x=45:5

x=9

Answer 3

It looks like you've provided a list of equations. Do you need help solving these equations or understanding them? Let's go through each equation one by one:

1. $259 - 3x = 190$: Subtract 259 from both sides to isolate the variable: $-3x = 190 - 259$ $-3x = -69$ Divide both sides by -3 to solve for $x$: $x = -69 / -3 = 23$

2. $14x - 193 = 7173$: Add 193 to both sides: $14x = 7173 + 193 = 7366$ Divide both sides by 14 to solve for $x$: $x = 7366 / 14 \approx 526.14$

3. $24x + 217 = 5294$: Subtract 217 from both sides: $24x = 5294 - 217 = 5077$ Divide both sides by 24 to solve for $x$: $x = 5077 / 24 \approx 211.54$

4. $(135 - 31x)^2 = 225$: Take the square root of both sides: $135 - 31x = \pm \sqrt{225} = \pm 15$ Solve for $x$ in both cases: Case 1: $135 - 31x = 15$ $31x = 135 - 15 = 120$ $x = 120 / 31 \approx 3.87$ Case 2: $135 - 31x = -15$ $31x = 135 + 15 = 150$ $x = 150 / 31 \approx 4.84$

5. $18(5x - 14) = 468$: Divide both sides by 18: $5x - 14 = 468 / 18 = 26$ Add 14 to both sides: $5x = 40$ Divide both sides by 5 to solve for $x$: $x = 40 / 5 = 8$

6. $(241 + 139) \cdot (2x - 247) = 20140$: Calculate the left side of the equation: $380 \cdot (2x - 247) = 20140$ Divide both sides by 380: $2x - 247 = 20140 / 380 \approx 53$ Add 247 to both sides: $2x = 300$ Divide both sides by 2 to solve for $x$: $x = 300 / 2 = 150$

7. $3x : 43 = 38$: Multiply both sides by 43 to solve for $3x$: $3x = 38 \cdot 43 = 1634$ Divide both sides by 3 to solve for $x$: $x = 1634 / 3 \approx 544.67$

8. $135 : 5x = 3$: Multiply both sides by $5x$ to solve for 135: $135 = 3 \cdot 5x = 15x$ Divide both sides by 15 to solve for $x$: $x = 135 / 15 = 9$

Please double-check the calculations, and if you have any questions about specific steps, feel free to ask!