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525 : x + 700 : x = 7
( 525 + 700 ) : x = 7
1225 : x = 7
x = 1225 : 7
x = 175
Nhớ tick cho mik nha !!!
525:x+700:x=7
(525+700):x=7
1225:x=7
x=1225:7
x=175
tick nha
![](https://rs.olm.vn/images/avt/0.png?1311)
![](https://rs.olm.vn/images/avt/0.png?1311)
525 : x + 700 : x = 7
( 525 + 700 ) : x = 7
1225 : x = 7
x = 1225 : 7
x = 175
Bấm đúng cho mik nha !!!
![](https://rs.olm.vn/images/avt/0.png?1311)
X : 525 + 700 : X = 7
<=> ( 525 + 700 ) : X = 7
<=> 1225 :x = 7
<=> x= 1225/7
<=> x=175
![](https://rs.olm.vn/images/avt/0.png?1311)
\(\frac{525}{x}+\frac{700}{x}=7\Rightarrow\frac{1}{x}\left(525+700\right)=7\Rightarrow\frac{1}{x}=\frac{1}{175}\Rightarrow x=175\)
![](https://rs.olm.vn/images/avt/0.png?1311)
a) 4 735 + 15 > 4 735 + 10
b) 524 – 10 < 525 – 10
c) 4 735 – 15 < 4 735 – 10
d) 7 700 + 2 000 = 6 700 + 3 000
![](https://rs.olm.vn/images/avt/0.png?1311)
525 + 525 x 3 + 998 x 525 - 525 x 2
= 525 x 4 + 523950 - 1050
= 2100 + 522900
= 525000
525 + 525 x 3 + 998 x 525 - 525 x 2
= 525 x 1 + 525 x 3 + 998 x 525 - 525 x 2
= 525 x (1 + 3 + 998 - 2)
=525 x 1000
=525000
![](https://rs.olm.vn/images/avt/0.png?1311)
\(\Leftrightarrow x\times\left(3+7\right)=700\\ \Leftrightarrow x\times10=700\\ \Leftrightarrow x=700:10\\ \Leftrightarrow x=70\)
![](https://rs.olm.vn/images/avt/0.png?1311)
525 x 341 + 252 x 659
= 525 x ( 341 + 659 )
= 525 x 1000
= 525000
TK nhé
525 x 341 + 525 x 659
= 525 x ( 341 + 659 )
= 525 x 1000
= 525000
(525+700):x=7
1223:x=7
x=1225:7
x=175
tick mk nhé!