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435 : x + 125 : x - 60 : x = 5
(435+125-60) : x = 5
500 : x = 5
x = 500 : 5
x = 100
435 : x + 125 : x - 60 : x = 5
( 435 + 125 - 60 ) : x = 5
500 : x = 5
x = 500 : 5
x = 100
![](https://rs.olm.vn/images/avt/0.png?1311)
\(x\times405=86265\)
\(x=86265:405\)
\(x\text{=}213\)
\(89658:x=293\)
\(x=89658:293\)
\(x\text{=}306\)
\(x+126=480\)
\(x=480-126\)
\(x=354\)
\(x-209\text{=}435\)
\(x\text{=}435+209\)
\(x\text{=}644\)
\(x:13=200+5\)
\(x:13\text{=}205\)
\(x\text{=}205\times13\)
\(x\text{=}2665\)
\(x\times40\text{=}26000-400\)
\(x\times40=25600\)
\(x\text{=}25600:40\)
\(x\text{=}640\)
\(962456-x=342\times7\)
\(962456-x=2394\)
\(x\text{=}962456-2394\)
\(x\text{=}960062\)
![](https://rs.olm.vn/images/avt/0.png?1311)
TL:
435 x 85 + 435 x 45 - 435 x 31 + 435
= 435 x 85 + 435 x 45 - 435 x 31 + 435 x 1
= 435 x (85 + 45 - 31 + 1)
= 435 x 100
= 43500
HT
Nhớ t i c k
435 x 85 + 435 x 45 - 435 x 31 + 435
435 x 85 + 435 x 45 - 435 x 31 + 435 x 1
= 435 x ( 85 + 45 - 31 + 1 )
= 435 x 100
= 43500
![](https://rs.olm.vn/images/avt/0.png?1311)
X + 126 = 480
\(\Rightarrow\)X = 480 - 126 = 354
X - 209 = 435
\(\Rightarrow\)X = 435 + 209 = 644
![](https://rs.olm.vn/images/avt/0.png?1311)
( 5 x − 19 ) + ( 3 x + 24 ) = 125
. 5 x − 19 + 3 x + 24 = 125
8 x + 5 = 125
8 x = 120
x = 15
( 435 + 125 - 60 ) : x =5
500 : x =5
x = 500 : 5
x =100
(435+125-60) : x = 5
500 : x = 5
x = 500 : 5 = 100
k mk nha