znajdź niewiadomą x i dokonaj sprawdzenia: 4-3x=-5 3(x+2)+2x=4 2x-8-5x=-9 3(x-2)-5x=10 3x-6=12 x-7-2(3x+5)=3 2(8-x)-3(9-x)=0 10=4-2x ZA BYLE CO LUB BRAK SPRAWDZENIA ZGŁASZAM NARUSZENIE!!!!!!!!!!!!!!
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4-3x=-5
-3x=-5-4
-3x=-9
x=3
spr.
4-3*3=-5
4-9=-5
-5=-5
3(x+2)+2x=4
3x+6+2x=4
5x=4-6
5x=-2
x=-0,4
spr
3(-0,4+2)+2*(-0,4)=4
-1,2+6+(-0,8)=4
6-2=4
4=4
2x-8-5x=-9
-3x=-9+8
-3x-1/-3
x=-1/3
spr
2*1/3-8-5*1/3=-9
2/3-8-5/3=-9
-3/3-8=-9
-1-8=-9
-9=-9
3(x-2)-5x=10
3x-6-5x=10
-2x=10+6
-2x=16/-2
x=-8
spr
3(-8-2)-5*(-8)=10
-24-6+40=10
-30+40=10
10=10
3x-6=12
3x=12+6
3x=18
x=6
spr
3*6-6=12
18-6=12
12=12
x-7-2(3x+5)=3
x-7-6x-10=3
-5x=3+7+10
-5x=20
x=-4
spr
-4-7-2(-4*3+5)=3
-4-7+24-10=3
-21+24=3
3=3
2(8-x)-3(9-x)=0
16-2x-27+3x=0
x=27-16
x=11
spr
2(8-11)-3(9-11)=0
16-22-27+33=0
0=0
10=4-2x
2x=4-10
2x=-6
x=-3
spr
-3*2=-6
-6=-6
:D