Odpowiedź:
a) x - (2x - 1) - 2x = 2(3x - 4)
x - 2x + 1 - 2x = 6x - 8
-3x + 1 = 6x - 8 =
- 3x - 6x = -1 - 8
- 9x = -9
x = 1
b) 3( x - 2 ) - ( x - 3 ) = - ( 5x- 4)
3x - 6 - x + 3 = - 5x + 4
2x - 3 = - 5x + 4
2x + 5x = 3 + 4
7x = 7
x = 1
c) -( 5x - 3 ) = 2 ( 4 - x ) - 3x
- 5x + 3 = 8 - 2x - 3x
- 5x + 3 = 8 - 5x
- 5x + 5x = - 3 + 8
x = -5
d) -2 ( 5x - 7 ) - 3x = 2 ( x - 8 )
- 10 + 14 - 3x = 2x - 16
4 - 3x = 2x - 16
- 3x - 2x = - 4 - 16
-5x = -20
x = 4
Szczegółowe wyjaśnienie:
