2 câu trả lời
a, 45 × 7 + 27 × 7 + 15 × 7 + 13 × 7
= 7 x ( 45 + 27 + 15 + 13 )
= 7 x 100
= 700
b, ( 126 + 32 : 8 ) × ( 118 - 116 - 2 )
= ( 126 + 32 : 8 ) × 0
= 0
1 vote + 1 cảm ơn
$a) 45×7+27×7+15×7+13×7$
$= 7 × (45 +27 +15 +13)$
$= 7 × 100$
$= 700$
$b) (126+32:8) × (118-116-2)$
$= (126 +32 : 8) × (118 -118)$
$= (126 +32 : 8) × 0$
$= 0$
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