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a)x/2=2/5(4-x)-4/*10
5x=4(4-x)-40
5x=16-4x-40
5x=-24-4x/+4x
9x=-24/:9
x=-24/9
b)2x-1/5-x-2/2=0,7x/*5
10x-1-5x-5=3,5x
5x-6=3,5x/*10
50x-60=35x/-35x
15x-60=0/+60
15x=60/:15
x=4
c)2x-3x+5/4=1/4x-1/*4
8x-12x+5=1x-4
-4x+5=x-4/-x
-5x+5=-4/-5
-5x=-9/:(-5)
x=9/5
Rozwiąż równania
a)1/3x-2=x+2/*3
x-6=3x+6/-x
-6=2x+6/-6
-12=2x/:2
-6=x
b)1-6/7x=4/7/*7
7-6x=4/-7
-6x=-3/:(-6)
x=1/2
c)6(1/4x-2)=18
6/4x-12=18/+12
6/4x=30/*4
6x=120/:6
x=20
d)x/6-1/6=1/*6
x-1=6/+1
x=7
e)-2(2x-1)=x/3
-4x+2=x/3/*3
-12x+6=x/-x
-13x+6=0/-6
-13x=-6/:13
x=-6/13
f)2/5(3-x)=-2
6/5-2/5x=-2/*5
6-2x=-2/-6
-2x=-8/:(-2)
x=4
g)3/4(2-3x)=-6
6/4-9x=-6/*4
6-36x=-24/-6
-36x=-30/:(-36)
x=30/36
h)1/5(x-3)=9-x
1/5x-3/5=9-x/*5
x-3=45-5x/-x
-3=45-5x/-45
-48=-5x/:(-5)
48/5=x
i)0,6+x/2=x+1/*10
6+5x=10x+10/-5x
6=5x+10/-10
-4=5x/:5
-4/5=x