Odpowiedzi

2009-05-25T18:59:39+02:00
A) 2(x+4)-5=-7
2x+8-5=-7
2x=-7-8+5
2x=-10 /:2
x=-5

b)3(2x-1)+4=7
6x-3+4=7
6x=7+3-4
6x=6 /:6
x=1
2009-05-25T19:02:56+02:00
2(x+4)-5= -7
2x+8-5=-7
2x= -8+5-7
2x=-10 /:2
x=-5




3(2x-1)+4=7
6x-3+4=7
6x=3-4+7
6x=6/:6
x=1
2009-05-25T19:03:19+02:00
2(x+4)-5= -7
2x+8-5= -7
2x+3= -7
2x= -10
x=-5


3(2x-1)+4=7
6x-3+4=7
6x+1=7
6x=6
x=1