Tính nhanh
a) \(5-\left(1997-2005\right)+1997\)
b) \(1579-\left(53+1579\right)-\left(-53\right)\)
c) \(-48-\left(357-48\right)+300\)
d) \(173-\left(36+173\right)+\left[\left(175-27\right)-175-\left(-36+50\right)\right]\)
e) \(-\left[-171+\left(171+23\right)\right]-\left[172-\left(38+172\right)\right]-49\)
Làm ơn giúp mik vs ạ mik đag cần gấp!
\(5-\left(1997-2005\right)+1997\)
\(=5-1997+2005+1997\)
\(=2010\)
\(1579-\left(53+1579\right)-\left(-53\right)\)
\(=1579-53-1579+53\)
\(=0\)
\(-48-\left(357-48\right)+300\)
\(=\)\(-48-357+48+300\)
\(=-57\)
\(173-\left(36+173\right)+\left(175-27\right)-175-\left(-36+50\right)\)
\(=173-36-173+175-27-175+36-50\)
\(=-27-50\)
\(=-77\)
\(\)
\(-\left[-171+171+23\right]-\left[172-\left(38+172\right)\right]-49\)
\(=171-171-23-172+38+172-49\)
\(=-23+38-49=-34\)
