Question

Rozwiąż równania ... treść w załaczniku.

Proszę o obliczenia pokazanym sposobem.

7 - (3x +4) = (x +1) - (2x +4) =

7- 3x - 4 = x + 1 - 2x -4 =

-3x - x + 2x = -7 + 4 + 1- 4 =

-2x = (-6) : (-2)

x = 3

DAJE NAJ!

Answer 1

\frac{5-x}{2} - 2(2x+5) = 2x -1 | * 2

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

5 - x - 8x - 20 = 4x - 2

-9x - 4x = -2 +15

- 13x = 13

x = -1

 

 

2(2x + 7) - \frac{x-2}{5} = 9 +2x | *5

10(2x + 7) - x+2 = 45+10x

20x + 70 - x +2 = 45 + 10x

19 x - 10 x = 45 - 72

9 x = -27

x = -3

 

 

 

\frac{x - 1}{3} +5(x + 3) = 2- x| *3

x-1 + 15(x+3) = 6 - 3x

x - 1 +15x + 45 = 6 - 3x

16x + 3x = 6 - 44

19x = -38

x = -2

 

 

 

 

-2(3x + 10) -\frac{x +8}{4} = 3(x+5)|* 4

-8(3x + 10) - x - 8 = 12(x + 5)

- 24x - 80 -x - 8 = 12x + 60

-25x - 12x = 60 +88

- 37x = 148

x = -4