Question

1.Rozwiąż równanie:
x+12=4
27-x=35
18+x=-7
x-16=-9
81-x=-13
-19+x=20
8x=3
3/4x=-2
-0,6x=9

Answer 1

x + 12 = 4

x =  4 - 12
x = - 8


27 - x = 35

- x = 35 - 27

- x = 8 / ( -1)

x = - 8

18 + x = -7

x = - 18 - 7

x = - 25

 

x - 16 = - 9

x = - 9 + 16

x = 7

 

81 - x = -13

- x = -81 -13

-x = - 94 /(-1)

x = 94

 

- 19 + x = 20

x = 19 + 20

x = 39

 

8x = 3 / :8

x = 0,375

 

3/4x = -2 /(3/4)

x =  - 2 * 4/3
x = - 8/3

x = - 2 2/3

 

-0,6x = 9 /(-0,6)

x = - 15

LICZĘ NA NAJ! :) POZDRAWIAM. :)  

 

Answer 2

1)

x+12=4

x=4-12

x=-8

2)

27-x=35

-x=35-27

-x=8 / ×(-1)

x=-8

3)

18+x=-7

x=-7-18

x=-25

4)

x-16=-9

x=-9+16

x=7

5)

81-x=-13

-x=-13-81

-x=-94 /×(-1)

x=94

6)

-19+x=20

x=20+19

x=39

7)

8x=3 /÷8

x=⅜

8)

3/4x=-2 /÷3/4

x=-2 ÷¾

x=-2 × 4/3

x=-8/3

x=-2⅔

9)

-0,6x=9  / ÷(-0,6)

x=9÷(-0,6)

x=-15