October 2018 2 23 Report

wykonaj sprawdzenia tych równań

x-2x-2=4

x-2x= 4+2

-x = 6 / -1

x= -6

3(x+1)-5(x+1)=0

3x+3 -5x-5= 0

3x - 5x= -3+5

-2x= 2/-2

x= -1

4(x-3)-2(3x-9)=0

4x - 12 - 6x +18=0

4x- 6x= -18+12

-2x= -6/-2

x= 3

7(x-4)+2x=8

7x-28+2x=8

7x+2x= 28+8

9x= 36/9

x= 4

3(2x-1)-16x= -8

6x-3- 16x= - 8

6x - 16x= - 8 +3

-10x = - 5/-10

x= 1/5

2x + 5x = 19 /*6

3 2

4x + 15x= 114

19x = 114/19

x= 6

4x-9 - 5x =1 /*108

9 12

48x-108 - 45x=1

48x-45x= 108 + 108

3x= 213/3

x= 72

x-3 = 4 /*3

3

x -3= 12

x= 9

5x-4 - 16x+1 = 0 /*14

2 7

35x- 28 - 32x +2= 0

35x - 32x= 28-2

3x= 26/3

x= 26/3

2(x+2) -3(x-1) +8 =3x-1

2x+4 -3x+3+8=3x-1

2x -3x-3x= -4-3-8-1

-4x= -16/-4

x= 4

0,5x-7= x-36:3

0.5x - 7= x -12

0.5x - x = -12 +7

-0.5x = -5/-0.5

x= 10


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