Question

metoda factorului comun
156:34+156*66=

121*1249-21*1249=

Answer 1

156(66-34)=156*32=4992
1249(121-21)=1249*100=124900

Answer 2

conform corecturii,avem:
 ...= 156*(34+66)=156*100=15600 ;
... = 1249*(121 - 21) = 1249*100=124900 ;