Question

Zad 1 Rozwiąż równania : a) 3x - 5 = 4+2x b) -5x+10 = -2x-8 c) -5x-17 = -9x +3 d) 7x+14 = 5x - 22 e) 2x-4+5x = x +2 f) -3+2x-6 = 3 - 4x g) 7x+2 = 5+3x+9 h) -5x +12 + x = 2x - 12 Zad 2 . Rozwiąż rówania. a) 2 (x-3) + 3 (4 - x) = 5 b) 3 ( x - 4 ) -2 ( 2x - 5) = -4 c) 2 ( x+4 ) -5 (x+3) = 2 d) -2 ( x+3 ) +4 (2x + 3 ) = -6 Zad 3 . Rozwiąż równania a) ( 4-2x ) - ( x+3 ) = (x-5) + (-3 -x) b) (3 - 2x ) + (3x +4) = - (3 - 2x ) + ( 5x+4 ) c) - (x +3) + (2x-1) = (1+4x) + (3+x) d) - ( x+3) - (2x +8 ) = (-3 -2x) + (2x+1 ) Prooszee pomózciee ;// .

Answer 1

1.

3x-5=4+2x

3x-2x=4+5

x=9

 

-5x+10=-2x-8

-5x+2x=-8-10

-3x=-18

x=6

 

-5x-17 = -9x +3

-5x+9x=3+17

4x=20

x=5

7x+14 = 5x - 22

7x-5x=-22-14

2x=-36

x=-18

2x-4+5x = x +2

2x+5x-x=2+4

6x=6

x=1

-3+2x-6 = 3-4x

2x+4x=3+3+6

6x=12

x=2

 7x+2 = 5+3x+9

7x-3x=9+5-2

4x=12

x=3

-5x +12 + x = 2x - 12

-5x+x-2x=-12-12

-6x=-24

x=4

2.

 2 (x-3) + 3 (4 - x) = 5

2x-6+12-3x=5

2x-3x=5+6-12

x=-1

 3 ( x - 4 ) -2 ( 2x - 5) = -4

3x-12-4x+10=-4

3x-4x=-4+12-10

-x=-2|:-1

x=2

2 ( x+4 ) -5 (x+3) = 2

2x+8-5x-15=2

2x-5x=2-8+15

-3x=9

x=-3

-2 ( x+3 ) +4 (2x + 3 ) = -6

-2x-6+8x+12=-6

-2x+8x=-12

6x=-12

x=-2