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1 x + 6 = 12
2 5x + 23 = 43
3 -2x-8=-10
4 -3x =10-2x
5 2 (x+2)=10
6 4 (x-1) = 12
7 10=2x+2
8 -10=3x-8
9 10=2(x+4)
10 6 (x+2) = 3 (x-1)



Odpowiedź :

Shy8

1. x=6

2.5x=20 x=4

3.-2x=-2 x=1

4. -x=10 x=-10

5. 2x+4=10 2x=6 x=3

6. 4x-4=12 4x=16 x=4

7. 8=2x x=4

8. -2=3x x=-2/3

9. 10=2x+8 2=2x x=1

10. 6x+12=3x-3 3x=-15 x=-5

Basetla

1)

x + 6 = 12

x = 12 - 6

x = 6

2)

5x + 23 = 43

5x = 43 - 23

5x = 20   /:5

x = 4

3)

-2x - 8 = -10

-2x = -10 + 8

-2x = -2  /:(-2)

x = 1

4)

-3x = 10 - 2x

-3x + 2x = 10

-x = 10   /:(-1)

x = -10

5)

2(x + 2) = 10   /:2

x + 2 = 5

x = 5 - 2

x = 3

6)

4(x - 1) = 12   /:4

x - 1 = 3

x = 3 + 1

x = 4

7)

10 = 2x + 2   /:2

5 = x + 1

-x -1 = -5

-x = -5 + 1

-x = -4   ?:(-1)

x = 4

8)

-10 = 3x - 8

-3x + 8 = 10

-3x = 10 - 8

-3x = 2   /:(-3)

x = -2/3

9)

10 = 2(x + 4)   /:2

5 = x + 4

x + 4 = 5

x = 5 - 4

x = 1

10)

6(x + 2) = 3(x - 1)   /:3

2(x + 2) = x - 1

2x + 4 = x - 1

2x - x = -1 - 4

x = -5

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