Toán Lớp 7: (8+8+9+10+6.8nhân 2+7.3nhân 3):9
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Toán Lớp 7: (8+8+9+10+6.8nhân 2+7.3nhân 3):9
Comments ( 2 )
$(8+8+9+10+6,8×2+7,3×3):9$
$=(8+8+9+10+13,6+21,9):9$
$=70,5:9$
$=7,8$
(8+8+9+10+6,8xx2+7,3xx3):9
=(16+9+10+13,6+21,9):9
=(26+9+35,3):9
=70,5:9
=7,8