(14678 : 2 + 2476) x (2576 - 2575)

= (7339 + 2476) x 1

= 9815

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!

\(a,1234.2014+2014.8766\)

  \(=2014.\left(1234+8766\right)\)

  \(=2014.10000\)

   \(=20140000\)

\(b,1357.2468-2468.357\)

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

\(=2468.1000\)

\(=2468000\)

(14678 : 2 + 2476).(2576 - 2575) = (7339+2476).1=9815.1=9815

(195 - 13. 15 ) : (1945 + 1014)=(195-195):2959=0:2959=0

a)

( 14 678 : 2 + 2 476 ) . ( 2 576 - 2 575 )

= ( 7 339 + 2 476 ) . 1

= 9 815 

b)

( 195  - 13 . 15 ) : ( 1 945 + 1 014 )

= ( 195 - 195 ) : ( 1 945 + 1 014 )

= 0 : ( 1 945 + 1 014 )

= 0

khùng hả

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.....