( - 12 ) - ( - 74 )
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a ) − 5 4 < − 1. b ) 31 8 > 2. c ) 9 14 < 17 7 . d ) 67 60 > 1 10
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1) 67 -12 + 112 +85 - 74 = 178
2) 89 - 74 = 15
ủng hộ nha
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\(a,31.\left(-18\right)+31.\left(-81\right)-31\)
\(=31\left(-18-81-1\right)\)
\(=31\left(-100\right)\)
\(=-3100\)
\(b,13\left(23+22\right)-3\left(17+28\right)\)
\(=299+286-51-84\)
\(=450\)
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a) 2 3 + 1 2 - 1 10 = 20 30 + 15 30 − 3 30 = 20 + 15 − 3 30 = 16 15
b) 4 1 7 : 7 4 = 17 4 : 7 4 = 17 4 × 4 7 = 17 7
TL
=62 nha bn
HT
Nhớ k
=62 nha em
HT !