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Perimetrul unei terase in forma de triunghi este de 243 m.laturile au lungimi diferite si sunt nr impare consecutive. Afla lungimea fiecareia.

Răspuns :

Notam p=1parte
I = 1p
II = 1p+2
III=1p+4
I    _____
II   _____ _ _
III  _____ _ _ _ _
acolada total 243
1p= [243-(2+4)]:3
1p=237:3
1p=79
I=1x79=79m
II=79m+2m=81m
III=79m+4m=83m

Verificare
79+81+83=243

R.
I=79m
II=81,
III=83m
corect
a=/---/, b=/---/+2, c=/---/+2+2; 243-3·2=243-6=237 --> 237:3=79 -->a=79 -->b=79+2=81; c=81+2=83. Proba 79+81+83=243