👤
a fost răspuns

Calculati folosind factorul comun a) 7*39+3*39 ,b)53*240+53*760 ,c)13*215-13*200 , d)12*625-525*12,e)83*25-64*25+25*81 ,f)72*13-72*5+72*12 ,g)120*3501+3501*20-3501*40 ,h) 31*73-31*3+31*29+31 , Va multumesc!!!!am nevoie urgent!!!!

Răspuns :

Mariamana
a)7*39++3*39=39(7+3)=39*10=390
b)53*240+53*760=53(240+760)=53*1000=53000
c)13*215-13*200=13(215-200)=13*15=195
d)12*625-525*12=12(625-525)=12*100=1200
e)83*25-64*25+25*81=25(83-64+81)=25*100=2500
f)72*13-72*5+72*12=72(13-5+12)=72*20=1440
Didi27
Sper ca înțelegi si ca te-am putut ajuta
Vezi imaginea Didi27

Alte intrebari