23244+24334=47578

= 47578

Hk tốt

8 / 4 = 2

vậy mẫu số chung nhỏ nhất là 8

duyệt đi

Tham khảo!

It's a truth that in love and war,
World's collide and hearts get broken,
I want to live like I know I'm dying,
Take up my cross, not be afraid

[Chorus]
Is it true what they say, that words are weapons?
And if it is,then everybody best stop steppin',
Cause I got ten in my pocket that'll bend ya locket,
I'm tired of all these rockers sayin' come with me,
Wait, it's just about to break, its more than I can take,
Everything's about to change,
I feel it in my veins, its not going away,
Everything's about to change.

It creeps in like a thief in the night,
Without a sign, without a warning,
But we are ready and prepared to fight,
Raise up your swords, don't be afraid,

[Chorus]

This is a warning, like it or not,
I break down, like a record spinning,
Gotta get up,
So back off,
This is a warning, like it or not,
I'm tired of listenin', I'm warning you, don't try to get up,

There's a war going on inside of me tonight (don't be afraid) [x2]

Wait, it's just about to break, its more than I can take,
Everything's about to change,
I feel it in my veins, its not going away,
Everything's about to change,
It's just about to break, its more than I can take,
Everything's about to change,
I feel it in my veins, its not going away,
Everything's about to change.

bài này tên là: Em là cô giáo vùng cao.

em là cô giáo vùng cao

https://www.youtube.com/watch?v=E5i8heYvCYQ

copy link nha

sách lớp mấy đó bạn

tập bn 

Bài 1:

Vì \(ƯCLN\left(a,b\right)=16\Rightarrow\hept{\begin{cases}a=16.m\\b=16.n\end{cases};\left(m,n\right)=1;m,n\in N}\)

Thay a = 16.m, b = 16.n vào a+b = 128, ta có:

\(16.m+16.n=128\)

\(\Rightarrow16.\left(m+n\right)=128\)

\(\Rightarrow m+n=128\div16\)

\(\Rightarrow m+n=8\)

Vì m và n nguyên tố cùng nhau

\(\Rightarrow\) Ta có bảng giá trị:

Vậy các cặp (a,b) cần tìm là:

  (16; 128); (128; 16); (48; 80); (80; 48).

Bài 2:

Gọi d là ƯCLN (2n+1, 2n+3), d  \(\in\) N*

\(\Rightarrow\hept{\begin{cases}2n+1⋮d\\2n+3⋮d\end{cases}}\)

\(\Rightarrow\left(2n+3\right)-\left(2n+1\right)⋮d\)

\(\Rightarrow2⋮d\)

\(\Rightarrow d\in\left\{1;2\right\}\)

Vì 2n+3 và 2n+1 không chia hết cho 2

\(\Rightarrow d=1\)

\(\RightarrowƯCLN\left(2n+1,2n+3\right)=1\)

\(\Rightarrow\) 2n+1 và 2n+3 là hai số nguyên tố cùng nhau.

cam on ban nhieu lam cuu tinh