1.Rozwiąż równania : c)x+2/9+x-1/3=1 d)2x+3/5=2-x/3+x 2.Rozwiąż równania : a)1/3x-2=x+2 d)x/6-1/6=1 e)-2(2x-1)=x/3 f)2/5(3-x)=-2 g)3/4(2-3x)=-6 h)1/5(x-3)=9-x
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c)
x+2/9+x-1/3=1
2x+2/9-1/3=1
2x+2/9-3/9=1
2x-1/9=1
2x=1+1/9
2x=10/9
x=5/9
x=5/9
d)
2x+3/5=2-x/3+x
2x=2-x/3+x-3/5
x=2-x/3-3/5
x=2-5x/15-15/15
15x=2-5x-15
15x=-13-5x
20x=-13
x=-13/20
A)
1/3x-2=x+2
1/3x=x+4
x=3x+12
-2x=12
x=-12/2
x=-6
D)
x/6-1/6=1
x-1/6=1
x-1=6
x=7
E)
-2(2x-1)=x/3
-4x+2=x/3
-12x+6=x
13x=6
x=6/13
F)
2/5(3-x)=-2
6/5-2/5x=-2
6-2x=-10
-2x=-16
x=-16/-2
x=8
G)
3/4(2-3x)=-6
6/4-9x/4=-6
6-9x=-24
-9x=-30
x=-30/-9
x=3,33(3)
H)
1/5(x-3)=9-x
1/5x-3/5=9-x
x-3=45-5x
6x-3=45
6x=48
x=48/6
x=8