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ex 12 si 14 ..

Dau coroana ..


Ex 12 Si 14 Dau Coroana class=

Răspuns :

gata am atasat rezolvarea celor doua
Vezi imaginea 102533
14.
(a+b+c)÷3=10,5=>(8,1(6)+16,(3)+c)=10,5×3
24,4(9)+c=31,5
c=31,5-24,4(9)=55,(9)
(a+b)÷2=12,25=>a+a×2=12,25×2
a×3=24,50
a=24,50÷3
a=8,1(6)
b=a×2=>8,1(6)×2=16,(3)
Sper ca te.am ajutat!!