Răspuns :
a+b+c= 63,56
a/2=b⇒ a=2b
b= 2c⇒ c=b/2
2b+ b+b/2 = 63,56
4b+2b+b=63,56*2
7b= 127,12
b=127,12:7
b=18,16
a=2*18,16
a= 36,32
c=18,16 : 2
c=9,08
a/2=b⇒ a=2b
b= 2c⇒ c=b/2
2b+ b+b/2 = 63,56
4b+2b+b=63,56*2
7b= 127,12
b=127,12:7
b=18,16
a=2*18,16
a= 36,32
c=18,16 : 2
c=9,08
Notez: a= primul nr.
b= al 2-lea nr.
c= al 3-lea nr.
a+ b+ c= 63,56 , a≠ b≠ c 1. c= ? a+ b+ c= 63,56
___________________
a= ? , b= ? , c= ? 2b+ 2c+ c= 63,56
b= a: 2 / a= 2b
b= 2c 2·2c+ 2c+ c= 63,56
4c+ 2c+ c= 63,56
7c= 63,56 I: 7
c= 9,08
2. b= ? 2·9,08= 18,16
3. a= ? 2·18,16=36,32
probă: a+ b+ c= 63,56
9,08+ 18,16+ 36,32= 63,56
27,24+ 36,32= 63,56
63,56= 63,56
b= al 2-lea nr.
c= al 3-lea nr.
a+ b+ c= 63,56 , a≠ b≠ c 1. c= ? a+ b+ c= 63,56
___________________
a= ? , b= ? , c= ? 2b+ 2c+ c= 63,56
b= a: 2 / a= 2b
b= 2c 2·2c+ 2c+ c= 63,56
4c+ 2c+ c= 63,56
7c= 63,56 I: 7
c= 9,08
2. b= ? 2·9,08= 18,16
3. a= ? 2·18,16=36,32
probă: a+ b+ c= 63,56
9,08+ 18,16+ 36,32= 63,56
27,24+ 36,32= 63,56
63,56= 63,56