Toán Lớp 6: 345-150:[(33-24)x 2-(-21))]+20160
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Toán Lớp 6: 345-150:[(33-24)x 2-(-21))]+20160
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Comments ( 2 )
@Mem gửi bạn
Xin hay nhất
$345 – 150 : [( 33 – 24 ) × 2 – ( – 21 )] + 20160$
$= 345 – 150 : [ 9 × 2 + 21 ] + 20160$
$= 345 – 150 : [ 18 + 21 ] + 20160$
$= 345 – 150 : 39 + 20160$
$= 345 – 3 + 20160$
$= 342 + 20160$
$= 20502$
Lời giải và giải thích chi tiết:
$\textit{345 – 150 : [(33 – 24) × 2 – (-21))] + 20160}$
$\textit{→ 345 – 150 : [9 × 2 + 21] + 20160}$
$\textit{→ 345 – 150 : [18 + 21] + 20160}$
$\textit{→ 345 – 150 : 39 + 20160}$
$\textit{→ 345 – 3 + 20160}$
$\textit{→ 342 + 20160}$
$\textit{→ 20502}$