Odpowiedź :
Zadanie
a)
3x - 1 = x + 2 +1
3x = x + 3 l -x
2x = 3 l :2
x = 1,5
b)
6 - 3x = 2 + 4x l -6
-3x = -4 + 4x l -4x
-7x = -4 l :(-7)
x = 4/7
c)
2.5x - 1 = 0.5x + 3 l +1
2,5x = 0,5x + 4 l -0,5x
2x = 4 l :2
x = 2
Zadanie
a)
3x - 1 = x + 2 +1
3x = x + 3 l -x
2x = 3 l :2
x = 1,5
b)
6 - 3x = 2 + 4x l -6
-3x = -4 + 4x l -4x
-7x = -4 l :(-7)
x = 4/7
c)
2.5x - 1 = 0.5x + 3 l +1
2,5x = 0,5x + 4 l -0,5x
2x = 4 l :2
x = 2