Question

Answer 1

1) (x + 2) - 2 = 0

x + 2 - 2 = 0

x = 0 (nhận)

Vậy x = 0

2) (x + 3) + 1 = 7

x + 3 + 1 = 7

x + 4 = 7

x = 7 - 4

x = 3 (nhận)

Vậy x = 3

3) (3x - 4) + 4 = 12

3x - 4 + 4 = 12

3x = 12

x = 12 : 3

x = 4 (nhận)

Vậy x = 4

4) (5x + 4) - 1 = 13

5x + 4 - 1 = 13

5x + 3 = 13

5x = 13 - 3

5x = 10

x = 10 : 5

x = 2 (nhận)

Vậy x = 2

Answer 2

5) (4x - 8) - 3 = 5

4x - 8 - 3 = 5

4x - 11 = 5

4x = 5 + 11

4x = 16

x = 16 : 4

x = 4 (nhận)

Vậy x = 4

6) 3 + (x - 5) = 7

3 + x - 5 = 7

x - 2 = 7

x = 7 + 2

x = 9 (nhận)

Vậy x = 9

7) 8 - (2x - 4) = 2

2x - 4 = 8 - 2

2x - 4 = 6

2x = 6 + 4

2x = 10

x = 10 : 2

x = 5 (nhận)

Vậy x = 5

8) 7 + (5x + 2) = 14

5x + 2 = 14 - 7

5x + 2 = 7

5x = 7 - 2

5x = 5

x = 5 : 5

x = 1 (nhận)

Vậy x = 1

Answer 3

1: (x+2)-2=0

=>x+2=2

=>x=0

2: (x+3)+1=7

=>x+3=6

=>x=3

3: (3x-4)+4=12

=>3x-4=8

=>3x=12

=>x=4

4: =>5x+4=14

=>5x=10

=>x=2

5: =>4x-8=8

=>4x=16

=>x=4

6: =>x-5=4

=>x=9

7: =>2x-4=6

=>2x=10

=>x=5

8: =>5x+2=7

=>5x=5

=>x=1