Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.
a: \(\left(2345+45\right)-2345\)
\(=2345+45-2345\)
\(=45+\left(2345-2345\right)\)
=45+0
=45
b: \(\left(-2010\right)-\left(119-2010\right)\)
\(=-2010-119+2010\)
\(=\left(-2010+2010\right)-119\)
=0-119
=-119
c: \(\left(18+29\right)+\left(158-18-29\right)\)
\(=18+29+158-18-29\)
\(=158+\left(18-18\right)+\left(29-29\right)\)
=158+0+0
=158
d: \(126+\left(-20\right)+2004+\left(-106\right)\)
\(=126-20+2004-106\)
\(=\left(126-20-106\right)+2004\)
=0+2004
=2004
e: \(\left(-199\right)+\left(-200\right)+\left(201\right)\)
\(=-199-200+201\)
\(=-199+\left(201-200\right)\)
=-199+1
=-198
f: \(99+\left(-100\right)+101\)
\(=\left(99+101\right)-100\)
=200-100
=100
g: \(217+\left[43+\left(-217\right)+\left(-23\right)\right]\)
\(=217+43-217-23\)
\(=\left(217-217\right)+\left(43-23\right)\)
=0+20
=20
a) (2345-45)+2345
= 2300 + 2345
= 4645
b) (-2010)-(119-2010)
= -2010-119+2010
= (2010-2010)-199
= -199
c) (18+29)+(158-18-29)
= 18+29+158-18-29
= (18-18)+(29-29)+158
= 158
d) 126+(-20)+2004+(-106)
= 126 -20 + 2004 - 106
= (126-20-106) +2004
= 2004
e) (-199)+(-200)+(-201)
= -(199+200+201)
= -600
g) 217+ [43+(-217)+(-23)]
= 217+ 43 - 217 + 23
= (217-217)+(43-23)
= 20
-Học tốt-
a) 2010 - 2000 : [486 - 2(72 - 6)]
= 2010 - 2000 : [486 - 2(49 - 6)]
= 2010 - 2000 : [486 - 2 . 43]
= 2010 - 2000 : [486 - 86]
= 2010 - 2000 : 400
= 2010 - 5
= 2005
b) 2345 - 1000 : [19 - 2(21 - 18)2 ]
= 2345 - 1000 : [19 - 2 . 32 ]
= 2345 - 1000 : [19 - 18]
= 2345 - 1000 : 1
= 2345 - 1000
= 1345
c) 128 - [68 + 8(37 - 35)2 ] : 4
= 128 - [68 + 8 . 22 ] : 4
= 128 - [68 + 32 ] : 4
= 128 - 100 : 4
= 128 - 25
= 103
d) 568 - {5[143 - (4 - 1)2 ] + 10} : 10
= 568 - {5[143 - 9 ] + 10} : 10
= 568 - {5 . 134 + 10 } : 10
= 658 - {670 + 10 } : 10
= 658 - 680 : 10
= 658 - 68
= 590
Có 2345/2345 = 1
456789/456793 < 1
=?2345/2345>456789456793
`(2345-45)+2345`
`=2300+2345`
`=4645`
__________________
`(-2010)-(119-2010)`
`=-2010-119+2010`
`=(-2010+2010)-119`
`=0-119`
`=-119`
(2345−45)+2345
=2300+2345=2300+2345
=4645=4645
(−2010)−(119−2010)
=-2010-119+2010=−2010−119+2010
=(-2010+2010)-119=(−2010+2010)−119
=0-119=0−119
=-119=−119