Question

3х+4х=63 11х-7х+2=34 5х+7х=48 15х-2х+5=83 Х+13х=42 19х-7х-6=6 4х+13+7х+7=130 9х+23-3х-17=126 15+10х-3х+11=110

Answer 1

1) 3x+4x=63

7x=63

x=9

2) 11x-7x+2=34

4x=32

x=8

3) 5x+7x=48

12x=48

x=4

4) 15x-2x+5=83

13x=78

x=6

5) x+13x=42

14x=42

x=3

6) 19x-7x-6=6

12x=12

x=1

7)4x+13+7x+7=130

11x+20=130

11x=110

x=10

8) 9x+23-3x-17=126

6x+6=126

6x=120

x=20

9) 15+10x-3x+11=110

7x+26=110

7x=84

x=12

Answer 2

To solve this system of equations, let's go step by step:

1. $3x + 4x = 63$ Simplifying the left side: $7x = 63$ Dividing both sides by 7: $x = 9$

2. $11x - 7x + 2 = 34$ Simplifying the left side: $4x + 2 = 34$ Subtracting 2 from both sides: $4x = 32$ Dividing both sides by 4: $x = 8$

3. $5x + 7x = 48$ Simplifying the left side: $12x = 48$ Dividing both sides by 12: $x = 4$

4. $15x - 2x + 5 = 83$ Simplifying the left side: $13x + 5 = 83$ Subtracting 5 from both sides: $13x = 78$ Dividing both sides by 13: $x = 6$

5. $x + 13x = 42$ Simplifying the left side: $14x = 42$ Dividing both sides by 14: $x = 3$

6. $19x - 7x - 6 = 6$ Simplifying the left side: $12x - 6 = 6$ Adding 6 to both sides: $12x = 12$ Dividing both sides by 12: $x = 1$

7. $4x + 13 + 7x + 7 = 130$ Simplifying the left side: $11x + 20 = 130$ Subtracting 20 from both sides: $11x = 110$ Dividing both sides by 11: $x = 10$

8. $9x + 23 - 3x - 17 = 126$ Simplifying the left side: $6x + 6 = 126$ Subtracting 6 from both sides: $6x = 120$ Dividing both sides by 6: $x = 20$

9. $15 + 10x - 3x + 11 = 110$ Simplifying the left side: $7x + 26 = 110$ Subtracting 26 from both sides: $7x = 84$ Dividing both sides by 7: $x = 12$

So, the solutions to the system of equations are $x = 1$, $x = 3$, $x = 4$, $x = 6$, $x = 8$, $x = 9$, $x = 10$, $x = 12$, and $x = 20$.