![](https://rs.olm.vn/images/avt/0.png?1311)
Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.
![](https://rs.olm.vn/images/avt/0.png?1311)
![](https://rs.olm.vn/images/avt/0.png?1311)
(-257)-{(-257+156)-56}
<=> (-257)-(-101-56)
<=> (-257)-(-157)
<=> -100
![](https://rs.olm.vn/images/avt/0.png?1311)
(-257)-[(-257+156)-56]
=(-257)-(-257+156-56)
=(-257)-(-257+100)
=-257+257-100
=(-257+257)-100
=0-100
=-100
![](https://rs.olm.vn/images/avt/0.png?1311)
-257 - [(-127 + 156) - 56]
= -257 + 127 - 156 + 56
= - (257 - 127) - (156 - 56)
= - 130 - 100
= - 230
![](https://rs.olm.vn/images/avt/0.png?1311)
![](https://rs.olm.vn/images/avt/0.png?1311)
( -2005) -[(- 257+156) -56]
= ( -2005 ) - [(-101) - 56 ]
= ( - 2005 ) - (-157 )
= -1848
(-2005)-[(-257+156)-56]
=(-2005)-[(-101)-56]
=(-2005)-(-157)
= -1848
![](https://rs.olm.vn/images/avt/0.png?1311)
(-257)-[(-257+156)-56]=-257-[-257+156-56]=(-257+257)+(156-56)=0+100=100
(-257)-[(-257+156)-56]=(-257)-[(-257+(156-56)]=(-257)-(-257)+100=-257+257+100=0+100=100
![](https://rs.olm.vn/images/avt/0.png?1311)
b)23.75+25.23+180
23.(75+25)+180
23.100+180
2300+180
2480
c)
-257-(-257)+100
(-257+257)+100
0+100
100
d)
-3-4+6
-3+(-4)+6
-7+6
-1
![](https://rs.olm.vn/images/avt/0.png?1311)
a: \(-59+71-\left\{-83-\left(95\right)\right\}\)
\(=71-59+81+95\)
\(=12+81+95\)
\(=93+95=188\)
b: \(-257-\left\{\left(-257+156\right)-56\right\}\)
\(=-257-\left(-257+156-56\right)\)
\(=-257-\left(-257+100\right)\)
\(=-257+257-100=-100\)
c: Sửa đề:\(\left(435-167\right)-89-\left(435-89\right)\)
\(=435-167-89-435+89\)
=\(\left(435-435\right)+\left(-89+89\right)-167\)
=0+0-167
=-167
d: \(-329+\left(15-101\right)-\left(25-440\right)\)
\(=-329+15-101-25+440\)
\(=\left(440-329-101\right)+\left(15-25\right)\)
=10-10
=0
e: \(\left(116+124\right)+\left(215-116-124\right)\)
\(=116+124+215-116-124\)
\(=\left(116-116\right)+\left(124-124\right)+215\)
=0+0+215
=215
f: \(4524-\left(864-999\right)-\left(36-999\right)\)
\(=4524-864+999-36+999\)
\(=4524-\left(864+36\right)+999\cdot2\)
\(=4524-900+1998=5622\)
![](https://rs.olm.vn/images/avt/0.png?1311)
Bài này bn có thể dùng máy tính nhé!
Nếu ko có máy tính thì bn có thể tự tính!
#LYB#
-257-[(-257+156)-56]=-458
157