Odpowiedź:
1. 8y-8=32
8y=32+8
8y=40 /:8
y=5
2. 6a - 3 = 45
6a=45+3
6a=48 /:6
a=8
3. 8r+1= 65
8r=65-1
8r=64 /:8
r=8
4.7y+3=10
7y=10-3
7y=7 /:7
y=1
5. 3r-2 = 16
3r=16+2
3r=18 /:3
r=6
6. 6i+1= 55
6i=55-1
6i=54 /:6
i=9
7. 7k-5 = 23
7k=23+5
7k=28 /:7
k=4
8. 95= 10m+5
-10m=5-95
-10m= -100 /:(-10)
m=10
9. 610 = 3y + 10
-3y=10-610
-3y= -600 /:(-3)
y=200
10. 53=8n+9
-8n=9-53
-8n= -44 /:(-8)
n=5,5
11. 3=4e-1
-4e= -1-3
-4e= -4 /: (-4)
e=1
12. 79=9m+7
-9m=7-79
-9m=-63 /:(-9)
m=7
13. 4z-6=3-z-3
4z+z=3-3+6
5z=6 /:5
z= 6/5
z= 1 i 1/5
14. 3a+3=a+11
3a-a=11-3
2a=8 /:2
a=4
15. 6(5d+2)-9=303
30d+12-9=303
30d=303-12+9
30d=300 /:30
d=10
Szczegółowe wyjaśnienie:
Liczę na naj <33
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Odpowiedź:
1. 8y-8=32
8y=32+8
8y=40 /:8
y=5
2. 6a - 3 = 45
6a=45+3
6a=48 /:6
a=8
3. 8r+1= 65
8r=65-1
8r=64 /:8
r=8
4.7y+3=10
7y=10-3
7y=7 /:7
y=1
5. 3r-2 = 16
3r=16+2
3r=18 /:3
r=6
6. 6i+1= 55
6i=55-1
6i=54 /:6
i=9
7. 7k-5 = 23
7k=23+5
7k=28 /:7
k=4
8. 95= 10m+5
-10m=5-95
-10m= -100 /:(-10)
m=10
9. 610 = 3y + 10
-3y=10-610
-3y= -600 /:(-3)
y=200
10. 53=8n+9
-8n=9-53
-8n= -44 /:(-8)
n=5,5
11. 3=4e-1
-4e= -1-3
-4e= -4 /: (-4)
e=1
12. 79=9m+7
-9m=7-79
-9m=-63 /:(-9)
m=7
13. 4z-6=3-z-3
4z+z=3-3+6
5z=6 /:5
z= 6/5
z= 1 i 1/5
14. 3a+3=a+11
3a-a=11-3
2a=8 /:2
a=4
15. 6(5d+2)-9=303
30d+12-9=303
30d=303-12+9
30d=300 /:30
d=10
Szczegółowe wyjaśnienie:
Liczę na naj <33