Răspunsuri

Cel mai inteligent răspuns!
2014-08-02T18:48:09+03:00
1. 18x-15x=5x+120x
122x=0
x=0
2. 4+3x+3=30-4+x
2x=30-3-4
2x=23
x=23/2
3. 42x-7=6-56x
42x+56x=7+6
98x=13
x=13/98


1 5 1