Odpowiedź:
a) 7x - 12 = 3x - 2
7x - 3x = -2 + 12
4x = 10 | : 4
x = 10/4
x = 5/2
x = 2 1/2
b) 2(3x - 2) = x + 6
6x - 4 = x + 6
6x - x = 6 + 4
5x = 10 | : 5
x = 2
c) 2x + 1 - 2 = 1/2 | * 3
3
2x + 1 - 6 = 3/2
2x - 5 = 3/2
2x = 3/2 + 5
2x = 5 3/2
2x = 13/2 | : 2
x = 13/2 * 1/2
x = 13/4
d) - 3(7x + 2) - 2x = 5(x - 3) - (2 + x)
- 21x - 6 - 2x = 5x - 15 - 2 - x
- 23x - 6 = 4x - 17
- 23x - 4x = - 17 + 6
- 27x = -11 | : (-27)
x = - 11/27
Szczegółowe wyjaśnienie:
te / jakby co oznacza ulamek yeah
sori jak cos jest zle,,,,
