Odpowiedź :
Odpowiedź:
a)\
4x + 15 = - 5
4x = - 5 - 15
4x = - 20
x = - 20/4 = - 5
b)
2x + 7 = 4x - 3
2x - 4x = - 3 - 7
- 2x = - 10
2x = 10
x = 10/2 = 5
c)
- (2x + 16) + 5(x + 3) = 2
- 2x - 16 + 5x + 15 = 2
3x - 1 = 2
3x = 2 + 1 = 3
x = 3/3 = 1
Odpowiedź:
a)\
4x + 15 = - 5
4x = - 5 - 15
4x = - 20
x = - 20/4 = - 5
b)
2x + 7 = 4x - 3
2x - 4x = - 3 - 7
- 2x = - 10
2x = 10
x = 10/2 = 5
c)
- (2x + 16) + 5(x + 3) = 2
- 2x - 16 + 5x + 15 = 2
3x - 1 = 2
3x = 2 + 1 = 3
x = 3/3 = 1