Răspunsuri

2014-11-13T16:40:38+02:00
A) - 5x = 1 - 1
- 5x = 0
b) 9x = - 89 - 1
9x = - 90
x = - 90 : 9
x = - 10
c) - 5x = - 19 - 1
- 5x = - 20
x = 20 : 5
x = 4
d) 2x = 5 - 1
2x = 4
x = 4 : 2
x = 2
e) - 3x = 15
x = - 15 : 3
x = - 5
f) x = 4 * 3
x = 12
g) 2x = - 4
x = - 4 : 2
x = - 2