Răspunsuri

2014-10-25T17:09:48+03:00
A) 3X + 5 - 6X + 12 = 4X + 8 - 5X + 20
3X - 6X - 4X + 5X = 20 + 8 - 5 - 12
- 2X = 11
X = - 11/2
b) 4x + 14 + 3x - 3 = 6x + 18 - 18
x = - 11
c) 15x - 15 + 8 - 12x = 9 - 2x - 8
5x = 8
x = 8/5
d) 2x + 5 + 9x - 3 = 8 - 56x + 2 + 3x
11x + 56x - 3x = 10 + 3 - 5
64x = 8
x = 8/64
x = 1/8
e) 30 - 10x + 6x + 12 = 13 + 14x - 7
- 18x = - 36
x = 36/18
x = 2