Odpowiedź:
d)
x/5 - 3 = x + 1/5 /*5
5*x/5 - 5*3 = 5*x + 5*1/5
x - 15 = 5x + 1
x - 5x = 1 + 15
- 4x= 16
x= 16 : (-4)
x= - 4
spr.
x/5 - 3 = x + 1/5
L= x/5 - 3= - 4/5 - 3 = - 3 i 4/5
P = -4 + 1/5 = - 3 i 4/5
- 3 i 4/5 = - 3 i 4/5
L=P
e)
5/6(x - 1) = 4 /*6
6*5/6(x - 1) = 6*4
5(x - 1) = 24
5x - 5= 24
5x = 24 + 5
5x= 29
x= 29 : 5
x= 29/5
x= 5 i 4/5
spr.
5/6(x - 1) = 4
L= 5/6(x-1) = 5/6(5 i 4/5 - 1) = 5/6 * 4 i 4/5 = 5/6 * 24/5= 1/1 * 4/1= 4/1= 4
P= 4
4=4
L=P
Szczegółowe wyjaśnienie: