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Mariaioana8
a fost răspuns

Daca a+b=16 b+c=36 si a+c=40 atunci 5a+5b+5c=??

Răspuns :

DianaClaudia
a+b=16
a+c=40
=> c-b=24 => c= 24+b
b+c=36 => b+24+b=36 => 2b=12 =>b=6
c=24+6=30
a+b=16 =>1+6=16 =>1=10

5*10+5*6+5*30=50+30+150=30+200=230