`a) 48048 - 48048 : 24 - 24 x 58 `

` = 48048 - 2002- 1392`

` = 46046 - 1392`

` = 44654`

b) 10000 - ( 93120 : 24 - 24 x 57 ) 

` = 10000 -  ( 3880 - 1368)`

` = 10000 - 2512`

` = 7488`

c) 100798 - 9894 : 34 x 23 - 23 =

` = 100798  - 6693 -23`

` = 94082`

a)48048-48048:24-24x57=44678

b)

= 10000 - ( 3880- 1368)

=10000 - 2512

=7488

c)100798-9894:34x23-23=94073

\(\dfrac{10}{16}=\dfrac{x+9}{24}\)

\(\Leftrightarrow x=\left(\dfrac{10}{16}x24\right)-9\)

\(\Leftrightarrow x=\dfrac{240}{16}-9=6\)

\(\dfrac{10}{16}=x+\dfrac{9}{24}\)

\(\dfrac{5}{8}=x+\dfrac{3}{8}\)

\(x=\dfrac{5}{8}-\dfrac{3}{8}\)

\(x=\dfrac{2}{8}\)

\(x=\dfrac{1}{4}\)

10000xy=10000x2

=> y=2

Vì y là giao hoán phép tính với 2

y = 2 nha bn

x + 2016 + 100 = 10000 

x + 2016 = 10000 - 100

x + 2016 = 9900

x = 9900 - 2016 

x = 7884 

\(x+2016+100=10000\\ x=10000-2016-100\\ x=7884\)

\(=\dfrac{16\left(48+24+28\right)}{16}=100\)

`[16xx48+16xx24+16xx28]/[325-317+426-418]`

`=[16xx(48+24+28)]/[8+426-418]`

`=[16xx100]/[434-418]=[16xx100]/16=100`

g: =900x13

=11700

a)184 x 72 + 184 x 27 + 184

=184 x 72 + 184 x 27 + 184 x 1

= 184 x (72 + 27 + 1 )

=184 x 100=18400

c)1999 x 346 + 1999 + 653 x 1999

=1999 x 346 + 1999 + 653 x 1999 x 1

= 1999 x ( 346 + 653 + 1 )

= 1999 x 1000=1999000

e)23 x 5 x 7 x 4

= ( 23 x 7) x( 5 x 4)

= 161 x 20= 3220

b)1996 x 1257 – 1996 – 256 x 1996

=1996 x 1257 – 1996 – 256 x 1996 x 1

= 1996 x ( 1257 - 256 - 1 )

= 1996 x 1000= 1996000

a,\(\frac{4}{3}\)x \(\frac{9}{8}\)x \(\frac{16}{15}\)x \(\frac{25}{24}\)

= \(\frac{5}{3}\)

b, \(\frac{4}{3}\)x \(\frac{9}{8}\)x \(\frac{16}{15}\)x \(\frac{25}{24}\)x \(\frac{36}{35}\)x \(\frac{49}{48}\)x \(\frac{64}{63}\)x \(\frac{81}{80}\)

= \(\frac{9}{5}\)

chi tiết hơn đc k bn

ĐẦU TIÊN BẠN TÍNH PHẦN CUỐI CÁI Đà

TỔNG CỦA CÂU A LÀ 90 000 + 10 000:2=50 000

 B LÀ 8000-1254x5=33730

C LÀ 23356-12435 +14763=35684

D  LÀ 3258+4657-3400=7915

A /X+1957=50 000

=50 000-1957

X=48047

B/x-1726=33720

x=33720+1726

x=35446

C/56347-x=35684

X=56347-35684

x=20663

D/x:4=7915

x=7945x4

x=34780