Răspuns :
a+b=1400
a=2b
b=2a
2b+2a=1400
(2b+2b)+2a=1400
4b+2a=1400
b=1400:4
b=350
a=2b=2x350
a=700
a=2b
b=2a
2b+2a=1400
(2b+2b)+2a=1400
4b+2a=1400
b=1400:4
b=350
a=2b=2x350
a=700
a+b=1400 si a=2b
↓
2b+b=1400
b = 1400:3 =466,(6)
⇒ a=2*466,(6) = 2* (1400/3) = 2800:3=933,(3)
↓
2b+b=1400
b = 1400:3 =466,(6)
⇒ a=2*466,(6) = 2* (1400/3) = 2800:3=933,(3)
