Odpowiedzi

2010-04-10T16:05:34+02:00
A) 3x + 34 = -2x - 11
3x+2x=-11-34
5x=-45 |:5
x=-9

b) (x + 4) - (3 - 2x) = (3x + 4) - (6 + x)
x+4-3+2x = 3x+4-6-x
3x+1 = 2x-2
3x-2x=-2-1
x= -3
2010-04-10T16:07:15+02:00
A) 3x + 34 = -2x - 11
3x + 2x = -11-34
5x = -45 |:5
x = -5
b) (x + 4) - (3 - 2x) = (3x + 4) - (6 + x)
x+4-3+2x=3x+4-6-x
3x-3x+x= -2-1
x= -3
2010-04-10T16:08:41+02:00
A) 3x+2x=-11-34
5x=-45/5
x=-9

b(x + 4) - (3 - 2x) = (3x + 4) - (6 + x)
x+4-3+2x=3x+4-6-x
x+2x-3x+x=4-6-4+3
x=-3