a,
A=-7264+(543+7264)
A= -7264 + 543 + 7264
A= (-7264 + 7264) + 543
A= 543
B= -(374+1152)+1152
B= -374 + (-1152) + 1152
B= -374 + [(-1152) + 1152]
B= -374
=> A>B
b)
C=115+[32-(132-15)]
C= 115 + 32 + (-132) + (-15)
C= (-15 + 115 ) + (-132 + 32)
C= 100 -100
C=0
D= 36-[(98+56-71)-(98+56)]
D= 36- [ 98+ 56+ (-71) + (-98) + (-56)]
D= 36- [ (-98+ 98) + (-56+56) + (-71) ]
D= 36 + 71
D= 107
=> C<D
thannks bạn Thảo nhìu nha
Answer:
\(A = -7264 + (543 + 7264)\)
\(= -7264 + 543 + 7264\)
\(= (-7264 + 7264) + 543\)
\(= 0 + 543\)
\(= 543\)
\(B = -(374 + 1152) + 1152\)
\(= -374 - 1152 + 1152\)
\(= -374 + (-1152 + 1152)\)
\(= -374 + 0\)
\(= -374\)
\(\Rightarrow A>B\)
\(C=115+[32-\left(132-15\right)]\)
\(=115+\left(32-132+15\right)\)
\(=115+32-132+15\)
\(=\left(115+15\right)+\left(32-132\right)\)
\(=130-100\)
\(=30\)
\(D=36-[\left(98+56-71\right)-\left(98+56\right)]\)
\(=36-\left(98+56-71-98-56\right)\)
\(=36-98-56+71+98+56\)
\(=\left(36+71\right)+\left(56-56\right)+\left(98-98\right)\)
\(=107\)
\(\Rightarrow C< D\)
