Odpowiedź:
Obliczenia
1/3 * x= 3
x= 3 : 1/3
x= 3 * 3/1
x= 9/1
x= 9
1/3 : 2/3 =
= 1/3 * 3/2 =
= 1/1 * 1/2 =
= 1/2
3 - x= 1/2
-x = 1/2 - 3
-x = - 2 i 1/2 /*(-1)
x= 2 i 1/2
3 : 1 i 5/7 =
= 3 : 12/7 =
= 3 * 7/12=
= 21/12=
= 1 i 9/12=
= 1 i 3/4
1/2 + x = 1 i 3/4
x= 1 i 3/4 - 1/2
x= 1 i 3/4 - 2/4
x= 1 i 1/4
x * 4/21 = 1/3
x = 1/3 : 4/21
x = 1/3 * 21/4
x = 1/1 * 7/4
x = 7/4
x = 1 i 3/4
Szczegółowe wyjaśnienie:
