Răspuns :
o + m =30
o = 4m
4m + m = 30
5m = 30
m = 6
o = 4 x 6
o = 24
verificare
24 + 6 = 30
sau :
M /----------/
O /---------/---------/---------/-----------/
Observam ca sunt 5 segmente egale asa ca :
30 : 5 = 6 ( un segment egal )
Maria = 6
Oana = 6 x 4 = 24
Succes la teme! :))
o = 4m
4m + m = 30
5m = 30
m = 6
o = 4 x 6
o = 24
verificare
24 + 6 = 30
sau :
M /----------/
O /---------/---------/---------/-----------/
Observam ca sunt 5 segmente egale asa ca :
30 : 5 = 6 ( un segment egal )
Maria = 6
Oana = 6 x 4 = 24
Succes la teme! :))
ALGEBRA(fara segmente)
o+m=30(probleme)
o=mx4=>o=4m
4m+m=30
5m=30=>m=30:5=>m=6
o=4m=>o=6x4=>o=24
METODA FIGURATIVA(cu segmente)
o+m=30
o=mx4=>o=4m
m |-------| }
o |-------|-------|-------|-------| }30
5 parti egale cu ''m''=30
m=30:5=>m=6
o=4m=>o=6x4=>o=24