Question

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x-2=8

c-10=1

x+7=9

3*m-4=18

0,1-x+7=11

1/3 y +4=9

5*5-9=6

7+2*x=15

6*k+3=33

Answer 1

x-2=8/+2

x=10

c-10=1/+10

c=11

x+7=9/-7

x=2

3*m-4=18/-4

3m=14/:3

m=4* 1/3

0,1-x+7=11/-0,1-7

-x=3,9/:(-1)

x=-3,9

1/3y +4 =9/-4

1/3y=5/*3

y=15

5*5-9=6

25-9=6

16=\6

7+2x=15/-7

2x=8/:2

x=4

6k+3=33/-3

6k=30/:6

k=5

Answer 2

x-2=8

x = 8+2

x=10

 

c-10=1

c = 1+10

c =11

 

x+7=9

x = 9-7

x =2

 

3*m-4=18

3m = 18+4

3m =22

m =  22/3

m = 7 i 1/3

 

0,1-x+7=11

-x = 11+7+0,1

-x = 18,1      /*-1

x = -18,1

 

1/3 y +4=9

1/3y = 9-4y = 5:1/3

y=5*3/1

y=15

 

 

5*5-9=6

brak niewiadomej

 

7+2*x=15

2x = 15-7

2x=8

x=4

 

6*k+3=33 

6k = 33-3

6k =30

k=5