2 câu trả lời
Đáp án:
TA CÓ :
$B=3bc+5n+am2$
$B=300+bc+50+n+am0+2$
$B=bc+n+am0+300+50+2$
$B=bc+n+am0+352$
$B=bc+amn+352$
$B=bc+a00+mn+352$
$B=abc+mn+352 =A $
Vậy B=A
`A=abc+mn+352`
`A=a×100+b×10 +c +m×10 +n +300+50+2`
`A=3b0+c+5n+am0 +2`
`A=3bc+5n+am2 =B`