Odpowiedź:
1.
2(5-d)=2-4d
10-2d=2-4d
-2d+4d=2-10
2d=-8
d=-8/2
d=-4
2.
2s+4=5(-4-2s)
2s+4=-20+10s
2s-10s=-20-4
-8s=-24
s=-24:(-8)
s=3
3.
-(4+h)=3h
-4-h=3h
-4=3h+h
-4=4h
-4:4=h
h=-1
4.
4(3+c)+c=c+4
12+4c+c=c+4
12+5c=c+4
5c-c=4-12
4c=-8
c=-8:4
c=-2
5.
-11f=7(1-2f)+5
-11f=7-14f+5
-11f=-14f+12
-11f+14f=12
3f=12
f=12:3
f=4
6..
-4n-8=4(-3n+2)
-4n-8=-12n+8
-4n+12n=8+8
8n=16
n=16:8
n=2
7.
6(-2g-1)=-(13g+2)
-12g-6=-13g-2
-12g+13g=-2+6
g=4
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Odpowiedź:
1.
2(5-d)=2-4d
10-2d=2-4d
-2d+4d=2-10
2d=-8
d=-8/2
d=-4
2.
2s+4=5(-4-2s)
2s+4=-20+10s
2s-10s=-20-4
-8s=-24
s=-24:(-8)
s=3
3.
-(4+h)=3h
-4-h=3h
-4=3h+h
-4=4h
-4:4=h
h=-1
4.
4(3+c)+c=c+4
12+4c+c=c+4
12+5c=c+4
5c-c=4-12
4c=-8
c=-8:4
c=-2
5.
-11f=7(1-2f)+5
-11f=7-14f+5
-11f=-14f+12
-11f+14f=12
3f=12
f=12:3
f=4
6..
-4n-8=4(-3n+2)
-4n-8=-12n+8
-4n+12n=8+8
8n=16
n=16:8
n=2
7.
6(-2g-1)=-(13g+2)
-12g-6=-13g-2
-12g+13g=-2+6
g=4