Question

Решить уравнения 9) 4х – 6 = 2х + 12 10) 3х + 3 = 2х + 13 11) 9 – 3х = 20 – 4х 12) 7х – 1 = 5х +23 13) 2 – 3х = 28 – 5х. 14) 6х + 3 = 5х + 17 15) 8х – 10 = 6х + 20 16) 17х -1 = 15 +16х 17) 19 + 3х = 5х – 15 18) 6 +2х = 4х – 30 19) 5х+ 3 = 4х +22 20) 2 + 2х = х +24 21) 5 + 7х =26 + 6х

Answer 1

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Answer 2

9)4x-6=2x+12
4x-2x=12+6
2x=18
X=9
10)3x+3=2x+13
3x-2x=13-3
X=10
11)9-3x=20-4x
X=11
12)7x-1=5x+23
X=12
13)2-3x=28-5x
X=13
14)6x+3=5x+17
X=14
15)8x-10=6x+20
X=15
16)17x-1=15+16x
X=16
17)19+3x=5x-15
X=17
18)6+2x=4x-30
X=18
19)5x+3=4x+22
X=19
20)2+2x=x+24
X=22
21)5+7x=26+6x
X=21

Answer 3

9. To solve the equation 4x - 6 = 2x + 12, we can start by simplifying both sides of the equation.

4x - 6 = 2x + 12 Subtract 2x from both sides: 4x - 2x - 6 = 2x - 2x + 12 2x - 6 = 12 Add 6 to both sides: 2x - 6 + 6 = 12 + 6 2x = 18 Divide both sides by 2: 2x/2 = 18/2 x = 9

So the solution to the equation is x = 9.

10. Let's solve the equation 3x + 3 = 2x + 13:

3x + 3 = 2x + 13 Subtract 2x from both sides: 3x - 2x + 3 = 2x - 2x + 13 x + 3 = 13 Subtract 3 from both sides: x + 3 - 3 = 13 - 3 x = 10

The solution to the equation is x = 10.

11. Solving the equation 9 - 3x = 20 - 4x:

9 - 3x = 20 - 4x Add 4x to both sides: 9 - 3x + 4x = 20 - 4x + 4x x = 20 - 9 x = 11

The solution to the equation is x = 11.

12. Let's solve the equation 7x - 1 = 5x + 23:

7x - 1 = 5x + 23 Subtract 5x from both sides: 7x - 5x - 1 = 5x - 5x + 23 2x - 1 = 23 Add 1 to both sides: 2x - 1 + 1 = 23 + 1 2x = 24 Divide both sides by 2: 2x/2 = 24/2 x = 12

The solution to the equation is x = 12.

13. Solving the equation 2 - 3x = 28 - 5x:

2 - 3x = 28 - 5x Add 5x to both sides: 2 - 3x + 5x = 28 - 5x + 5x 2x = 28 + 2 2x = 30 Divide both sides by 2: 2x/2 = 30/2 x = 15

The solution to the equation is x = 15.

14. Let's solve the equation 6x + 3 = 5x + 17:

6x + 3 = 5x + 17 Subtract 5x from both sides: 6x - 5x + 3 = 5x - 5x + 17 x + 3 = 17 Subtract 3 from both sides: x + 3 - 3 = 17 - 3 x = 14

The solution to the equation is x = 14.

15. Solving the equation 8x - 10 = 6x + 20:

8x - 10 = 6x + 20 Subtract 6x from both sides: 8x - 6x - 10 = 6x - 6x + 20 2x -