Question

12,5-X÷4=7,6

Answer 1

`12,5-x:4=7,6`

`x:4=12,5-7,6=4,9`

`x=4,9xx4`

`x=19,6`

Answer 2

\(12,5-x:4=7,6\\ x:4=12,5-7,6\\ x:4=4,9\\ x=19,6\)

Answer 3

pttđ:

\(\dfrac{25}{2}-\dfrac{x}{4}=\dfrac{38}{5}\)

\(\dfrac{250}{20}-\dfrac{5x}{20}=\dfrac{152}{20}\)

=> 250 - 5x = 152 

=> 5x = 250 - 152 = 98

=> x = 98/5