Toán Lớp 6: bỏ dấu ngoạc (-4280-{-218-[-118-(-318)+2012]}
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Toán Lớp 6: bỏ dấu ngoạc (-4280-{-218-[-118-(-318)+2012]}
Comments ( 1 )
$=-4280-${$-218-2212$}
$=-4280-(-2430)$
$=-4280+2430$
$=-1850$