Răspuns :
Răspuns:
Explicație pas cu pas:
abb+aab+bba-2×aba+3×aaa
100a+10b+b+100a+10a+b+100b+10b+a-200a-20b-2a+300a+30a+a=
=100(a+a+b-2a+3a)+10(b+a+b-2b+3a)+(b+b+a-2a+a)=
=100(3a+b)+10·4a+2b=300a+100b+40a+2b=340a+42b
Răspuns:
Explicație pas cu pas:
abb+aab+bba-2×aba+3×aaa
100a+10b+b+100a+10a+b+100b+10b+a-200a-20b-2a+300a+30a+a=
=100(a+a+b-2a+3a)+10(b+a+b-2b+3a)+(b+b+a-2a+a)=
=100(3a+b)+10·4a+2b=300a+100b+40a+2b=340a+42b