Răspuns :
a.I____I____I____I____I
b.I____I
c.I____I____I
Suma este 406 .
406:7=58 ( b )
58x4=232 ( a )
58x2=116 ( c )
Verificare : 116+232+58=406
b.I____I
c.I____I____I
Suma este 406 .
406:7=58 ( b )
58x4=232 ( a )
58x2=116 ( c )
Verificare : 116+232+58=406
a+b+c=406
a+a:4+a:2=406
aducem la acelasi numitor
4a+a+2a=1624
7a=1624
a=1624:7
a=232
b=a:4
b=232:4=58
c=a:2
c=232:2=116
a+a:4+a:2=406
aducem la acelasi numitor
4a+a+2a=1624
7a=1624
a=1624:7
a=232
b=a:4
b=232:4=58
c=a:2
c=232:2=116