Question

(2x-5).12=84

Answer 1

\(\left(2x-5\right)\times12=84\\ =>2x-5=84:12\\ =>2x-5=7\\ =>2x=7+5\\ =>2x=12\\ =>x=12:2\\ =>x=6\)

Answer 2

\(\left(2x-5\right) . 12=84\)
 \(2x-5\)         \(=84 : 12\)
 \(2x-5\)         \(=7\)
 \(2x\)               \(=7+5\)
 \(2x\)               \(=12\)
   \(x\)               \(=12 : 2\)
   \(x\)               \(=6\)

Answer 3

(2x - 5).12 = 84

2x - 5 = 84 : 12

2x - 5 = 7

2x = 7 + 5

2x = 12

x = 12 : 2

x = 6

Vậy x = 6

Answer 4

\(\left(2x-5\right).12=84\)
\(2x-5=7\)
\(2x=12\)
Vậy \(x=6\)

Answer 5

`2x - 5 = 7`

`2x =12`

`x = 6`