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2010-03-03T16:13:26+01:00
A)4x-3=3x+5
4x-3x=5+3
x=8

b)5x+2=7-3x
5x+3x=7-2
8x=5 |:8
x=5/8

c)3(x-1)=0
3x-3=0
3x=3 |:3
x=1

d)-6(x+1)=24
-6x-6=24
-6x=24+6
-6x=30 |:-6
x=-5

e)-7(x-2)=3x-1
-7x+14=3x-1
-7x-3x=-1-14
-10x=-15 |:-10
x=15/10
x=3/2

f)4(x-1)=6(1+x)
4x-4=6+6x
4x-6x=6+4
-2x=10 |:-2
x=-5
2010-03-03T16:13:56+01:00
A)4x-3=3x+5

4x-3x = 5+3
x = 8

b) 5x+2=7-3x
5x+3x = 7-2
8x = 5 /: 8
x= ⅝

c) 3(x-1)-0
3x - 3 = 0
3x = 3 /:3
x = 1

d)-6(x+1)=24
-6x - 6 = 24
-6x = 24+6
-6x = 30 /: (-6)
x = 5

e)-7(x-2)=3x-1
-7x+14=3x-1
-7x-3x=-1-14
-10x=-15 |:-10
x=15/10
x=3/2

f)4(x-1)=6(1+x)
4x - 4 = 6 + 6x
4x - 6x = 6+4
-2x = 10 / : (-2)
x=5
2010-03-03T16:14:45+01:00
A). 4x -3x= 5 +3
x= 8
b). 5x+3x= 7 -2
8x= 5
x= 5/8
c).3x -3= 0
3x= 3
x= 1
d).-6x -1=24
-6x= 24+1
-6x= 25
x= -25/6
e).-7x+14=3x-1
-7x -3x= -1 -14
-10x= -15
x =-1.5
f). 4x-4=6 +6x
4x- 6x= 6+ 4
-2x = 10
x= -5