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2009-04-18T17:41:36+02:00
A) x/4-1/4=2 |x4
x-1=8
x=9
b) x/5-3=x+5 |x5
x-15=5x+25
x-5x=25+15
-4x=40 |:-4
x=-10
c)5/6(x-1)=4 |x6
5(x-1)=24
5x-5=24
5x=29 |:5
x=5⅘
1 5 1
2009-04-18T17:44:49+02:00
A) x/4 - 1/4 = 2 |*4
x-1=8 |+1
x=9


b) x/5 - 3 = x + 5 |*5
x-15=5x+25 |+15
x=5x+40 |-5x
-4x=40 |:(-4)
x=-10


c) 5/6 (x - 1) = 4 |*6
5(6x-6)=24
30x-30=24 |+30
30x=54 |:30x
x=1,8
1 5 1