Răspunsuri

2014-09-04T14:00:25+03:00
Nr mic    l____l
nr mare  l____l____l____l____l____l____l____l
x+7x=640
8x=640(8 segmente egale)
640:8=80(primul nr)
80x7=560(al doilea nr)
4 4 4
2014-09-04T14:00:29+03:00
Fie  x si y nr cautate

x=7y
x+y=640
7y+y=640
8y=640
y=640:8
y=80. 

x=7·80
x=560
1 5 1