Odpowiedzi

2010-01-24T21:01:29+01:00
A) 2x-5=4x+17
2x-4x=17+5
-2x=22/-2
x=11
B) 3x+34=-2x-11
5x=-11-34
5x=-45/5
x=-9
C)4x-5-7x=2-5x-23
4x-7x+5x=2-23+5
2x=-16/2
x=-8
D)4x-5+2x=4-7x+31
4x+2x+7x=4+31+5
13x=40/13
x=3 1/13
E)3x-15>5x-33+3x-5x>-33+15
-2x>-18/-2
x<9
F)6x+7-+7x>2-4x-17
6x-7x+4x>2-17-7
3x>-22/3
x>-22/3
x>-7 1/3
2010-01-24T21:13:30+01:00
A) 2x-5=4x+17
2x-4x=17+5
-2x=22/ -2
x=-11

b)3x+34=-2x-11
3x+2x=-11-34
5x=-45/5
x=-9

c)4x-5-7x=2-5x-23
4x-7x+5x=-23+2+5
2x=-16/2
x=-8

d)4x-5+2x=4-7x+31
4x+2x+7x=31+4+5
13x=40/13
x=40/13
x=3 1/13 trzy i jedna trzynasta

e)3x-15>5x-33
3x-5x>-33+15
-2x>-8/-2
x<4

g)6x+7-7x>2-4x-17
6x-7x+4x>-17+2-7
3x>-22/3
x<-22/3
x<-7 1/3 -siedem i jedna trzecia
2010-01-24T21:51:06+01:00
A) 2x-5=4x+17
2x-4x=17+5
-2x=22/ -2
x=-11

b)3x+34=-2x-11
3x+2x=-11-34
5x=-45/5
x=-9

c)4x-5-7x=2-5x-23
4x-7x+5x=-23+2+5
2x=-16/2
x=-8

d)4x-5+2x=4-7x+31
4x+2x+7x=31+4+5
13x=40/13
x=40/13
x=37/13

e)3x-15>5x-33
3x-5x>-33+15
-2x>-8/-2
x<4

g)6x+7-7x>2-4x-17
6x-7x+4x>-17+2-7
3x>-22/3
x<-22/3
x<-22/3