zad1.
a)-(4+x)=2(3-x)
b)3(y+6)-y=2(y+9)
c)(x-7)-2(3x+5)=3
zad2.
a)0,1x+0,2=-0,3
b)0,25x+0,4=0,35
c)1-0,2x=-0,3x
d)0,01x-1=0,1x-0,1
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-(4+x)=2(3-x)| -4-x = 6- 2x | -x + 2x = 6+4| x=10
3(y+6)-y=2(y+9)| 3y+18 -y= 2y + 18| 2y+18= 2y +18|0=0
(x-7)-2(3x+5)=3 | x-7 - 6x- 10 =3| 5x-17=3|5x=17+3| 5x=20:5| x= 4
0,1x+0,2=-0,3 | 0,1x= -0,5 /0,1| x= 5
0,25x+0,4=0,35 | 0,25x= 0,35 -0,4| 0,25x = -0,05/0,25| x = -0,2
1-0,2x=-0,3x | 1=0,1x | x = 0,1
0,01x-1=0,1x-0,1 | 0,99x= 0,99/0,99 | x =0