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Marianrazvan235
a fost răspuns

daca a+b=5 si b+c=8  
calculati: a+2b+c
2a+5b+3c

Răspuns :

Jul
a+2b+c = a + b + b + c=5+ 8=13
2a + 5b + 3c= 2a + 2b +3b+3c= 2 ori 5 + 3 ori 8 = 10+ 24=34
Deva
a+b=5,b+c=8
a+2b+c=a+b+b+c=5+8=13
2a+5b+3c=a+a+2b+b+b+b+c+c+c=a+b+b+b+c+c+13=
5+8+8+13=34
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