Rozwiaz rowniania ZAD 5/70 zb zad
b) -x+3/5-1=3-5x/2
c) 2(x+3)-4=2x+3/6-x
d) -2x-1/9+4x-5/15=x-5
e) -5(x-2)/2=5-3x/4
( ten znakk "/" to kreska ulamkowa )
ZAD4/70 zb zad
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
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Zad5
b) -x+3/5-1=3-5x/2
-x+5x/2=3-3/5+1
-2x/2+5x/2=4-3/5
3x/2=3 i 2/5
3x/2=17/5 /*2
3x=34/5 /:3
x=34/5*1/3
x=34/15
x=2 i 4/15
c) 2(x+3)-4=2x+3/6-x
2x+6-4=x+3/6
x=3/6-2
x=3/6-12/6
x=-9/6
x=-3/2
d) -2x-1/9+4x-5/15=x-5
2x-1/9-5/15=x-5
x=-5+1/9+5/15
x=-5+1/9+1/3
x=-5+1/9+3/9
x=-5+4/9
x=-4 i 5/9
e) -5(x-2)/2=5-3x/4 /*2
-5(x-2)=10-3x/2
-5x+10=10-3x/2
-5x+3x/2 =0
x=0
Zad4
e) 2x+8(2x-3)-6(x-3)=5(3x+1)+2x-11
2x+16x-24-6x+18=15x+5+2x-11
12x-15x-2x=-6+24-18
-5x=0
x=0
f) 3(2x+3)-5(x-2)-4(x+7)=3
6x+9-5x+10-4x-28=3
-3x=3+9
-3x=12
x=-4
g) 6(3,5-1,2x)=5(-3,5x+1,2)+0,3x
21-7,2x=-17,5x+6+0,3x
-7,2+17,5x-0,3x=6-21
10x=-15 /:10
x=-10/15
x=-2/3