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2010-02-09T19:31:34+01:00
X+2 / 9 + x-1 / 3 = 1
2X +2/9+1/3=1
2X + 2/9 +1/3 =1 |-1/3
2X + 2/9 =2/3 |
2010-02-09T19:33:22+01:00
2x+2/9 - 3/9=1
2x-1/9=1 / +1/9
2x= 1 i 1/9 /:2
x= 5/9 ( bo 1 i 1/9 to 10/9 a 10/9:2=5/9 )