Odpowiedzi

2010-03-30T20:41:32+02:00
A) 6x-12=3x+3a ; x
6x -3x =3a + 12
3x=3a + 12 / : 3
x = a +4

b) 5y-(-8c+y)=12ab ;y
5y+8c-y = 12ab
5y-y=12ab-8c
4y=12ab-8c / :4
y=3ab-2c
22 4 22
2010-03-30T20:41:41+02:00
A) 6x-12=3x+3a
6x-3x-3a=12
3x-3a=12/:3
x-a=4/+a
x=4+a
b)5y-(-8c+y)=12ab
5y+8c-y=12ab
5y-y=12ab-8c
4y=12ab-8c / :4
y=3ab-2c


11 4 11