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Roxanicanebuna
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Fie nr nat a+b=5 b+c=13 a+c=14 3a+3b+3c= 5a+5b+5c= a, b, c,=

Răspuns :

Renatemambouko
a+b=5
b+c=13
a+c=14
a+b+b+c+a+c=5+13+14
2(a+b+c)=32
a+b+c=16      a=16-13=3     b=16-14=2   c=16-5=11

3a+3b+3c= 3(a+b+c)=3×16=48
5a+5b+5c=5(a+b+c)=5×16=80

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