Odpowiedzi

2009-11-02T18:25:30+01:00
(7x+1)/9 - (4x-5)/5 >1
5(7x+1)/45 - 5(4x-5)/45 >1
(35x+5)/45 - (36x-45)/45 >1
(35x+5-36x+45)/45 >1
(-x+50)/45 >1 |*45
-x+50 >45 |-50
-x > -5
x<5
x=4