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1/2x+1/4x+1/8x=21
4/8x+2/8x+1/8x=21
7/8x=21
x=21*8/7
x=24
1/2 x + 1/4x + 1/8 x = 21
7/8x=21/ podzielic na 7/8
x= 21 * 8/7
x=3*8
x= 24
sorry za pomyłke
1/2 x + 1/4 x + 1/8 x = 21
4/8 x + 2/8 x + 1/8 x = 21
7/8 x = 21 /razy 8/7
x=24
Spr. 1/2 razy 24 + 1/4 razy 24 + 1/8 razy 24= 12+6+3= 21
Odp. Liczba Ani wynosi 24.