Question

3+2x-1=24-[42-(22-1)]

tìm x

Answer 1

3 + 2x - 1= 24 - [42 - (22 - 1)

3 + 2x - 1= 24 - [42 - 21]

3 + 2x - 1= 24 - 21

3 + 2x - 1= 3

3 + 2x = 3 + 1

3 + 2x = 4

2x = 4 - 3

2x =1

x = 1:2

x = 0,5

Vậy x = 0,5

Answer 2

3 + 2x - 1= 24 - [42 - (22 - 1)

3 + 2x - 1= 24 - [42 - 21]

3 + 2x - 1= 24 - 21

3 + 2x - 1= 3

3 + 2x = 3 + 1

3 + 2x = 4

2x = 4 - 3

2x =1

x = 1:2

x = 0,5

suy ra x = 0,5

Answer 3

3+2x-1=24-[42-(22-1)]

3+2x-1=24-(42-21)

3+2x-1=24-21

3+2x-1=3

3+2x=3+1

3+2x=4

2x=4-3

2x=1

x=1:2

x=0,5

Answer 4

3+2x-1=24-[42-(22-1)]

3+2x-1=24-(42-21)

3+2x-1=24-21

3+2x-1=3

3+2x=3+1

3+2x=4

2x=4-3

2x=1

x=1:2

x=0,5

Answer 5

3+2x-1=24-[42-(22-1)]
3+2x-1=24-[42-21]
3+2x-1=24-21
3+2x-1=3
2x-1=3-3
2x-1=0
2x =0+1
2x =1
x =2:1
x =2