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ex 113 pls. am nev repede

Ex 113 Pls Am Nev Repede class=

Răspuns :

Prima lada - a
a doua lada - b
a treia lada - c
a+b+c=954
b= 2a
c=a+b=3a
a+b+c= a+2a+3a=6a
6a=954
a=159 kg
b=2a=159×2= 318 kg
c=3a=159×3=477 kg
verificare: 159+318+477= 954
a |-----|
b |-----|-----|
c |-----|-----|-----|             } 954 kg.

954 : 6 = 159 kg ( in prima lada)
159 x 2 = 318 kg ( in a doua lada)
159 + 318 = 477 kg ( in a treia lada)
Verificare : 159 + 318 + 477 = 954 kg ( in cele trei  lazi ).