Odpowiedzi

2010-03-03T14:25:04+01:00
3X- 9
5Y+5Z
12X- 4Y
12A- 3C
-14+6N

0,2X- Y
a+ 3
-2b +1
2z+1
2010-03-03T14:25:52+01:00
3x-9
5y+5z
12x-4y
12a-3c
-14+8n
b)0,2x-y
a+3
-2b+1
2z+1
2010-03-03T14:30:14+01:00
A)
3(x-3)= 3x-9
5(y+z)= 5y+5z
4(3x-y)= 12x-4y
3(4a-c)= 12a-3c
-2(7-4n)= 8n-14
b)
0,2(x-5y)= 0,2x-y
3(1/3a+1)= a+3
-1/3(6b-3)= 1-2b
1/2(4z+2)= 2z+1