Câu 1 :
a) 25 - (-75) + 32 - (32 + 75)
= 25 + 75 + 32 - 32 - 75
= 25 + (75 - 75) + (32 - 32)
= 25 + 0 + 0
= 25
b) |-127| - 18 . (5 - 6)
= 127 - 18 . (-1)
= 127 + 18
= 145
c) 24.(16 - 5) - 16.(24 - 5)
= 24.11 - 16.19
= 16.16,5 - 16.19
= 16.(16,5 - 19)
= 16.(-2,5)
= -40
ủng hộ tớ nha
kb nha
a)25-(-75)+32-(32+75)=25-(-75)+32-107=25
b)l-127l-18.(5-6)=127-18.(-1)=127-(-18)=145
c)24.(16-5)-16.(24-15)=24.11-16.9=264-144=120
\(a,25-\left(-75\right)+32-\left(32+75\right)\)
\(=25+75+32-32-75\)
\(=25+\left(75-75\right)+\left(32-32\right)\)
\(=25+0+0\)
\(=25\)
\(b,\left|-127\right|-18.\left(5-6\right)\)
\(=127-18.\left(-1\right)\)
\(=127+18\)
\(=145\)
\(c,24.\left(16-5\right)-16.\left(24-5\right)\)
\(=24.16-24.5-16.24+16.5\)
\(=\left(24.16-16.24\right)-\left(24.5-16.5\right)\)
\(=24.\left(16-16\right)-5.\left(24-16\right)\)
\(=24.0-5.8\)
\(=0-40\)
\(=-40\)