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a fost răspuns

1)efectuati utilizand factorul comun ca in modelul rezolvat:
ex:a)2•45+2•5=2•5(45+5)=2•50100
b)10•18+10•2=
c)8•31-8•11=
d)23•18-23•8=
e)15•38+15•62=
f)12•13+12•15+12•72=
Plz e urgent!

Răspuns :

Talentat5031
b)10(18+2)
c)8(31-11)
d)23(18-8)
e)15(38+62)
f)12(13+15+72)
10×18+10×2=10×2(18+2)=10×40=400
8×31-8×11=8×11(31-11)=8×341-121=2607

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