Odpowiedź:
a)
6x - 2 = 5x - 4
6x - 5x = -4 + 2
x = -2
b)
2(x - 4) = x + 12
2x - 8 = x + 12
2x - x = 12 + 8
x = 20
c)
4x - 3 - 2x = x - 5
4x - 2x - x = -5 + 8
x = 3
d)
6(2x - 3) = 3
12x - 18 = 3
12x = 3 + 18
12x = 21
x = 1,75
e)
2x - 8 - 4x = 5x - 12
2x - 4x - 5x = - 12 + 8
-7x = -4
-x = - 0,(571428)
x = 0,(571428)
Odpowiedź:
a) 6x-2=5x-4
6x - 5x = - 4 + 2
x= -2
b) 2(x-4)=x+12
2x - 8 = x + 12
2x - x = 12 + 8
x = 20
c) 4x-3-2x=x-5
2x - 3 = x - 5
x = -5 + 3
x = -2
d) 6(2x-3)=3
12x - 18 = 3
12 x = 18 + 3
12x = 21
x = 21 / 12
x = 7/4
e) 2x-8-4x=5x-12
-2x -8 = 5x - 12
- 2x - 5x = -12 + 8
-7x = - 4
x = 4/7
Szczegółowe wyjaśnienie: