oblicz:
a) 6x -7(11+2x)+2=-4(15-x)+3x
b)3(5x+3)=7(x+5)-3(2-x)
c)2(x-1)+4(x-3)=-3(x-2)+9
d)5x-3(6-8x)=x-7(x+4)
e)2x+8(2x-3)-6(x-3)=5(3x+1)+2x-11
f)3(2x+3)-5(x-2)-4(x+7)=3
g)6(3,5-1,2x)=5(-3,5x+1,2)+0,3x
h)2+ x/2=1-x/3
i)x+3/5-1=3-5x/2
j)2(x+3)/9-4=2x+3/6-x
k)-2x-1/9+4x-5/15=x-5
l)-5(x-2)/2=5-3x/4
m)1-[3 (x+5)/2=3x/5]=-1
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a]6x-7[11+2x]+2=4[15-x]+3x
6x-77-14x+2=60-4x+3x
6x-14x+4x-3x=60+77-2
-7x=135 /:-7
x= -19,28
b]3[5x+3]=7[x+5]-3[2-x]
15x+9=7x+35-6+3x
15x-7x-3x=35-6-9
5x=20 /:5
x=4
c] 2[x-1]+4[x-3]= -3[x-2]+9
2x-2+4x-12= -3x+6+9
2x+4x+3x=6+9+2+12
9x=29 /:9
x=3,2
d] 5x-3[6-8x]=x-7[x+4]
5x-18+24x=x-7x-28
5x+24x-x+7x= -28+18
35x= -10 /:35
x -0,28
e]2x+8[2x-3]-6[x-3]=5[3x+1]+2x-11
2x+16x-24-6x+18=15x+5+2x-11
2x+16x-6x-15x-2x=5-11+24-18
-5x=0 /:-5
x=0
f] 3[2x+3]-5[x-2]-4[x+7]=3
6x+9-5x+10-4x-28=3
6x-5x-4x=3-9-10+28
-3x=12 /:-3
x= -4
g] 6[3,5-1,2x]=5[-3,5x+1,2]+0,3x
21-7,2x= -17,5x+6+0,3x
-7,2x+17,5x-0,3x=6-21
10x= -15 /:10
x= -1,5
h] 2+x/2=1-x/3 /*6
12+3x=6-2x
3x+2x=6-12
5x= -6 /:5
x= -1,2
i]x+3/5-1=3-5x/2 /*10
10x+6-10=30-25x
10x+25x=30-6+10
35x=34 /:35
x=34/35
j] 2[x+3]/9-4=2x+3/6-x /*54
12[x+3]-216=108x+27-54x
12x+36-216=108x+27-54x
12x-108x+54x=27-36+216
-42x=207 /:-42
x=- 4,92
k] -2x-1/9+4x-5/15=x-5
-2x-1/9+4x-1/3=x-5 /*9
-18x-1+36x-3=9x-45
-18x+36x-9x= -45+1+3
9x=-42 /:9
x= -4,66
l] -5[x-2]/2=5-3x/4 /*4
-10[x-2]=20-3x
-10x+20=20-3x
-10x+3x=20-20
-7x=0 /:-7
x=0
m] 1-[3[x+5/2-3x/5]= -1 /*10
10-[15[x+5]-2*3x]= -10
10-[15x+75-6x]=-10
10-15x-75+6x= -10
-15x+6x= -10-10+75
-9x=55 /:-9
x= -6,11