Question

Co trzeba wpisać zamiast znaków zapytania?
12/7 × ? = 3
? × 5/4 = 3
? × 11/22 = 3
21/30 × ? = 3
Na jutro!​

Answer 1

Odpowiedź:

12/7 * x = 3

x = 3 : 12/7 = 3 * 7/12 = 21/12

x = 21/12

spr    12/7 * 21/12 = 3

x * 5/4 = 3

x = 3 : 5/4 = 3 * 4/5 = 12/5

x = 12/5

spr  12/5 * 5/4 = 3

x * 11/22 = 3

x = 3 : 11/22 = 3 * 22/11 = 66/11

x = 66/11

spr    66/11 * 11/22 = 3

21/30 * x = 3

x = 3 : 21/30 = 3 * 30/21 = 30/7

x = 30/7

spr  21/30 * 30/7 = 3