Question

 2(x – 1) = 7 + (-3)

Answer 1

2(x – 1) = 4

x – 1 = 4:2

x – 1 = 2

x = 2 + 1

x = 3

Answer 2

2(x-1)=7+(-3)

⇔2(x-1)=4

⇔x-1=4:2

⇔x-1=2

⇔x=3

Answer 3

 2(x – 1) = 7 + (-3)

2 (x – 1) = 4

x – 1 = 4 ;; 2

x – 1 = 2

x = 2 + 1

x = 3

Answer 4

 2(x - 1) = 7 + (-3)

2(x - 1) = 4

x - 1 = 4 : 2

x - 1 = 2

x = 2 + 1

x = 3

Answer 5

2(x-1)=7+(-3)

⇔2(x-1)=4

⇔x-1=4:2

⇔x-1=2

⇔x=3

Answer 6

2(x – 1) = 4

x – 1 = 4:2

x – 1 = 2

x = 2 + 1

x = 3

Answer 7

2(x – 1) = 4

→x – 1 = 4:2

→x – 1 = 2

→x = 2 + 1

→x = 3

Answer 8

2 (x-1) = 7 + (-3)

2 (x-1) = 4

     x-1  = 4 - 2

    x - 1 = 2

         x = 2 + 1

         x = 3

vậy x = 3