Question

obliczcie te przykłady:

s-9=6

7+x=15

k+3=7

s*9=36

6*x=54

k*3=27

5*s-9=6

7+2*x=15

6*k+3=33

3*m-4=18

0,1*x+7=11

Answer 1

Mam nadzieję, ze się nie machnęłam :)

 

Answer 2

s-9=6

s = 6 + 9

s = 15

 

7+x=15

x = 15 - 7

x = 8

 

k+3=7

k = 7 - 3

k = 4

 

s*9=36

s = 36 : 9

s = 4

 

6*x=54

x = 54 : 6

x = 9

 

k*3=27

k = 27 : 3

k = 9

 

5*s-9=6

5*s = 6 + 9

5*s = 15

s = 15 : 5

s = 3

 

7+2*x=15

2*x = 15 - 7

2*x = 8

x = 8 : 2

x = 4

 

6*k+3=33

6*k = 33 - 3

6*k = 30

k = 30 : 6

k = 5

 

 

3*m-4=18

3*m = 18 + 4

3*m = 22

m = 22 : 3

m = 22/3 = 7 i 1/3

 

0,1*x+7=11

 0,1*x = 11 - 7

0,1*x = 4

x = 4 : 0,1

x = 40 : 1

x = 40