Odpowiedzi

Najlepsza Odpowiedź!
2010-03-18T21:40:53+01:00
X-5-2(x+1)=4(5-x)
x-5-2x-2=20-4x
-x -7 = 20 -4x
3x =27
x=9
2010-03-18T21:41:22+01:00
X-5-2(x+1)=4(5-x)
x - 5 - 2x - 2 = 20 - 4x
-x - 7 = 20 - 4x
-x + 4x = 20 + 7
3x = 27 / :3
x = 9
1 1 1
2010-03-18T22:02:07+01:00
X-5-2(x+1)=4(5-x)
x-5-2x-2=20-4x
-x -7 = 20 -4x
3x =27
x=9
1 1 1