Question

cloșca noastra are cu 5pui mai putini decat closva bunicilor si cu 5 pui mai mult decat closva mătușii. Daca cele trei closti au împreună 45 de pui , afla câți pui are fiecare closca.

Answer 1

a= closca noastra
b=closca bunicii
c=closca matusii
a=b-5=>b=a+5
a=c+5=>c=a-5
a+b+c=45
a+a+5+a-5=45
3a=45
a=15
b=20
c=10

Answer 2

Notam:n-nr de pui al clostii noastre;____ _____b-nr de pui ai clostii bunicului____ ____m-nr de pui ai clostii matusii______ ___n=b-5,atunci b=n+5______________ __n=m+5,atunci m=n-5_____________ __Stiim ca: n+b+m=45_______________ ___Inlocuim:n+n+5+n-5=45___________________3xn+5-5=45_______________________3xn+0=45________________________3xn=45___________________________n=45:3=15_________________________b=n+5=15+5=20____________________m=n-5=15-5=10