A = 6616

B = 6989

ghi nhìu z ai trả lời nổi

nếu ai thấy mk nói đúng

thì nhớ k nha

thanks nhìu

a) 7080-(1000-536) = 6616

b) 5347+(2376-734)= 6989

c) 2806-(1134+950)-280=442

d) 136.(668-588)-404.25= 780

e) 1953+(17432-56.223):16=2262

g) 6010-(130.52-68890:83) = 80

c) 1054+987-1108

=2041-1108

=933

b) 8376-2453-699

=5923-699

=5224

b) 5347+(2376-734)

=5347+1642

=6989

d) 136.(668-588)-404.25

=136.80-404.25

=10880-10100

=780

g) 6010-(130.52-68890:83)

=6010-(6760-830)
=6010-5930

=80

\(a,1234.2014+2014.8766\)

  \(=2014.\left(1234+8766\right)\)

  \(=2014.10000\)

   \(=20140000\)

\(b,1357.2468-2468.357\)

\(=2468.\left(1357-357\right)\)

\(=2468.1000\)

\(=2468000\)

mai mik phải nộp bài rùi

a . 1234.2014+2014.8766

=2014.(1234+8766 )

=2014.10000

=20 140 000

b.1357.2468-2468.357

=2468.(1357-357)

=2468.1000

=2 468 000

c. (14678:2+2476).(2576-2575)

=(7339+2476).1

=9815.1

=9815

d, (195-13.16):(1945+1014)

=(195-208):2959

=-13:2959

=\(\frac{-13}{2959}\)

                             Chúc bạn học thật tốt nhé!

136 . ( 668 - 588 ) - 404 . 25 = 780

\(136\cdot\left(668-588\right)-404\cdot25\)

\(=136\cdot80-404\cdot25\)

\(=10880-10100\)

\(=780\)

136 . ( 688 - 588 ) - 404 . 25

= 136 . 100 - 10100

= 13600 - 10100

= 3500

1. a. 1234.2014+2014.8766

= 2014.(1234+8766)

= 2014.10000

= 20140000

b. 1357.2468-2468.357

= 2468.(1357-357)

= 2468.1000

= 2468000

c. (14678:2+2476).(2576-2575)-> (nếu hợp lí thì chỗ này phải là 2576)

= (7339+2476).1

= 9815.1

= 9815

d. (195-13.15) : (1945+1014)

= (195-195) : (1945+1014)

= 0 : (1945+1014)

= 0

2. a. 456+(x-357)=1362

=> x-357=1362-456

=> x-357=906

=> x=906+357

=> x=1263

b. (2345-x)-183=2014

=> 2345-x=2014+183

=> 2345-x=2197

=> x=2345-2197

=> x=148

c. (x-2005).2006=0

=> x-2005=0:2006

=> x-2005=0

=> x=2005+0

=> x=2005

d. 480+45.4=(x+125):5+260

=> 480+180=(x+125):5+260

=> 660=(x+125):5+260

=> (x+125):5=660-260

=> (x+125):5=400

=> x+125=400.5

=> x+125=2000

=> x=2000-125

=> x=1875

e. 2005.(x-2006)=2005

=> x-2006=2005:2005

=> x-2006=1

=> x=1+2006

=> x=2007

g. [(x+50).50-50]:50=50

=> (x+50).50-50=50.50

=> (x+50).50-50=2500

=> (x+50).50=2500+50

=> (x+50).50=2550

=> x+50=2550:50

=> x+50=51

=> x=51-50

=> x=1

Đúng rồi đây các bạn hihi.....