876*96+23*876+76*876

= 876+{96+23+76}

= 876*195

= 170820

Trl 

56/76+65/76=121/76

Hok tốt 

Trl 

31/40+13/40=44/40=11/10

Hok tốt 

 \(\frac{112}{23}+\frac{345}{23}+\frac{145}{23}+\frac{666}{23}=\left(\frac{112}{23}+\frac{666}{23}\right)+\left(\frac{345}{23}+\frac{145}{23}\right)=\frac{778}{23}+\frac{490}{23}=\frac{1268}{23}\)

Trả lời

566 + 65 = 631

575 - 76 = 499

56 x 64 = 3584

1760 : 32 = 55

Hok tốt

#)Trả lời :

566 + 65 = 631 

575 - 76 = 499

56 x 64 = 3584

1760 : 32 = 55

       #~Will~be~Pens~#

1.9381

2.228,684

3.355,148 :>

đề 1: = 9381

đề 2: = 228684

đề 3 : = 355148

\(m\cdot76+m\cdot23+m=9\cdot76+9\cdot23+9\)

                                              \(=684+207+9\)

                                              \(=891+9\)

                                              \(=900\)

\(\frac{42+y}{72}=\frac{153}{171}\)

\(\Rightarrow\left(42+y\right)\times171=76\times153\)

\(\Rightarrow\left(42+y\right)\times171=11628\)

\(\Rightarrow42+y=11628:171=68\)

\(\Rightarrow y=68-42=26\)

\(\frac{42+y}{76}=\frac{153}{171}\Rightarrow171\left(42+y\right)=153.76\Rightarrow7182+171y=11628\Rightarrow171y=4446\Rightarrow y=26\)

Vậy y = 26

de vay ma ma cung do

1) \(19=\frac{38}{2}=\frac{76}{4}=\frac{95}{5}\)

2) \(1=\frac{3}{3}=\frac{9}{9}=\frac{1000}{1000}\)

~~ Học tốt ~~