Răspuns :
25 - 24 = 7 - 2x
1 = 7 - 2x
7 - 2x = 1
- 2x = 1 - 7
- 2x = - 6
x = ( - 6 ) ; ( - 2 )
x = 3
1 = 7 - 2x
7 - 2x = 1
- 2x = 1 - 7
- 2x = - 6
x = ( - 6 ) ; ( - 2 )
x = 3