zadanie 6 str 195 na szybko klasa 5 matematyka

Odpowiedź:
2/3 : x = 10/21
x = 2/3 : 10/21
x = 2/3 * 21/10
x = 7/5
x = 1 2/5
spr.
L = 2/3 : 7/5 = 2/3 * 5/7 = 10/21 = P
4/7 : x = 4/35
x = 4/7 : 4/35
x = 4/7 * 35/4
x = 5
spr.
L = 4/7 : 5 = 4/7 * 1/5 = 4/35 = P
x : 1/4 = 12
x * 4 = 12
4x = 12 /:4
x = 3
spr.
L = 3 : 1/4 = 3 * 4 = 12 = P
2/5 : x = 2
x = 2/5 : 2
x = 2/5 * 1/2
x = 1/5
spr.
L = 2/5 : 1/5 = 2/5 * 5 = 2 = P
x : 2/3 = 3/8
x * 3/2 = 3/8
3/2x = 3/8 /*2/3
x = 1/4
spr.
L = 1/4 : 2/3 = 1/4 * 3/2 = 3/8 = P
3/7 : x =1
x = 3/7 : 1
x = 3/7
spr.
L = 3/7 : 3/7 = 3/7 * 7/3 = 1 * 1 = 1 = P
Szczegółowe wyjaśnienie: