\(A=\frac{\frac{4}{111}+\frac{4}{123}-\frac{4}{999}}{\frac{2}{111}+\frac{2}{123}+\frac{2}{999}}\)

\(=\frac{4.\left(\frac{1}{111}+\frac{1}{123}+\frac{1}{999}\right)}{2.\left(\frac{1}{111}+\frac{1}{123}+\frac{1}{999}\right)}\)

\(=\frac{4}{2}=2\)

Kết quả là 764 

NHA ^_^

764 nha bạn

​Phép tính đầu tiên:

   123+123-123+123

= 123+     0     +123

=          123x2

=246

Phép tính thứ 2:

3333+4444-3344

=7777-3344

=  4433

​Phép tính cuối:

111+222-333

= 333-333

=0

Ủng hộ mình lên 110 nha Thank You Very Much !!!!!!!!!!!!!!

\(\frac{\frac{4}{111}+\frac{4}{123}+\frac{4}{999}}{\frac{2}{111}+\frac{2}{123}+\frac{2}{999}}=\frac{4.\left(\frac{1}{111}+\frac{1}{123}+\frac{1}{999}\right)}{2.\left(\frac{1}{111}+\frac{1}{123}+\frac{1}{999}\right)}=\frac{4}{2}=2\)

\(=\frac{2\left(\frac{2}{111}+\frac{2}{123}+\frac{2}{999}\right)}{\frac{2}{111}+\frac{2}{123}+\frac{2}{999}}\)

\(=2\)

\(a,=\left(123-123\right)+\left(54+46\right)=100\\ b,=\left(-64+64\right)+\left(71-111\right)=-40\)

a: =54+46=100

Lời giải:

a.

$=123+54-123+46=(123-123)+(54+46)=0+100=100$

b.

$=-64-111+64+71=(-64+64)-(111-71)=0-40=-40$

nooooooooooooooooooooooooooooooooooooooooooooooooooooo

123+|54+(-123)+46|

=123+|54+46+(-123)|

=123+|100+(-123)|

=123+|-23|

=123+23=146

-64+|(-111)+64+71|

=-64+|(-111)+135|

=-64+|24|

=-64+24=-40

Chúc bạn học tốt ^^!!!

a) \(123+\left[54+\left(-123\right)+46\right]\)

\(=123+54+\left(-123\right)+46\)

\(=54+46\)

\(=100\)

b) \(-64+\left[\left(-111\right)+64+71\right]\)

\(=-64+\left(-111\right)+64+71\)

\(=\left(-111\right)+71\)

\(=-40\)

\(=\frac{4.\left(\frac{1}{111}+\frac{1}{123}-\frac{1}{999}\right)}{2.\left(\frac{1}{111}+\frac{1}{123}-\frac{1}{999}\right)}=\frac{4}{2}=2\)

Sửa đề lại rồi đó hả bạn?!

\(=\frac{4}{111}:\frac{2}{111}+\frac{4}{123}:\frac{2}{123}-\frac{4}{999}:\frac{2}{999}\)

\(=\frac{4}{111}\times\frac{111}{2}+\frac{4}{123}\times\frac{123}{2}-\frac{4}{999}\times\frac{999}{2}\)

\(=2+2-2\)

\(=2\)

:))