Question

2.x + 7 = 15

Answer 1

\(2.x+7=15\)
\(2.x=15-7\)
\(2.x=8\)
\(x=\dfrac{8}{2}\)
\(x=4\)

Answer 2

\(2.x+7=15\\ 2x=5-7\\ 2x=8\\ x=8:2\\ x=4\)

Answer 3

2.x+7=15

2.x=15-7

2.x=8

x=8:2

x=4

 

Answer 4

2.x+7=15

2.x    =15−7

2.x    =8

x       =8:2

x       =4

Answer 5

2.x + 7 = 15

2.x       = 15 - 7

2.x       = 8

   x       = 8 : 2

   x       = 4

 Vậy x  = 4