rozwiąż równania .
/ <--- ułamek
a.
-2(2x-1)=x:3
...
b.
2/5(3-x)=-2
...
c.
3/4(2-3x)=-6
...
d.
1/5(x-3)=9-x
...
e.
0,6+x:2=x+1
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a)
-2(2x-1)=x:3
-4x+2=1/3x /x3
-12x+6=x /+12x
13x=6 /:13
x=6/13
b)2/5(3-x)=-2
6/5-2/5x=-2 /x5
6-2x=-10 /-6
-2x=-16 /:-2
x=8
c)3/4(2-3x)=-6
6/4-9/4x=-6 /x4
6-9x=-6 /-6
-9x=-12 /:-9
x=1 1/3
d)1/5(x-3)=9-x
1/5x-3/5=9-x /x5
x-3=45-5x /+3
x=48-5x /+5x
6x=48 /:6
x=8
e)0,6+x:2=x+1
0,6+0,5x=x+1 /-0,5x
0,6=0,5x+0,5 /-0,5
0,5x=0,1 /x2
x=0,2