Odpowiedzi

2010-01-17T12:42:47+01:00
Jeden bok to x
drugi bok to x+2
wszystkie boki to x+x+x+2+x+2
obwód 24 cm
24 cm - (2cm + 2cm ) = 20 cm
20 cm : 4x = 5 cm
krótszy bok to 5 cm
dłuższy bok to 7 cm
2 3 2
2010-01-17T12:44:26+01:00
X- 1 bok
x+2cm- 2 bok

2*x+2*(x+2cm)= 24cm
2x+2x+4cm=24cm
4x+4cm=24cm
4x=24cm-4cm
4x=20cm//4
x=5cm

5cm-1 bok
5cm+2cm=7cm- 2 bok

2*5cm+2*7cm=24cm
2010-01-17T12:44:26+01:00
X+2+x+2+x+x=27
4x+4=24
4x=20 /÷4
x=5 - jeden bok

5+2=7 - drugi bok
2 3 2