Toán Lớp 6: 17+(-20)+23+(-26)+…+53+(-56)
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Toán Lớp 6: 17+(-20)+23+(-26)+…+53+(-56)
Comments ( 2 )
$\text{= ( -3 ) + ( -3 ) + …. + ( -3 )}$
= ( -3 ) + ( -3 ) + …. + ( -3 )