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a) x ÷ 682 = 18 + 3
x ÷ 682 = 21
x = 21 × 682
x = 14322
b) 2912 ÷ x = 224
x = 2912 ÷ 224
x = 13
![](https://rs.olm.vn/images/avt/0.png?1311)
548x307=168236
1379x460=634340
45540:345=132
38600:900=42(dư 8)
![](https://rs.olm.vn/images/avt/0.png?1311)
a: 36891+58167=95058
b: 96274-25485=70789
c: 49508*307=15198956
d: 348527:168=2074 dư 95
![](https://rs.olm.vn/images/avt/0.png?1311)
624578+38216=662794
93524-68920=24604
248*307=76136
9776:47=208
![](https://rs.olm.vn/images/avt/0.png?1311)
\(a.16307:y=45\left(dư\text{ }17\right)\)\(\Leftrightarrow45\text{×}y+17=16307\)
\(45\text{×}y=16307-17\)
\(45\text{×}y=16290\)
\(y=16290:45\)
\(y=362\)
\(b.y\text{×}52+y\text{×}48=36700\)
\(y\text{×}\left(52+48\right)=36700\)
\(y\text{×}100=36700\)
\(y=36700:100\)
\(y=367\)
a) 16307= 45*y+17 -> y=(16307-17)/45= 362
b) y*(52+48)= 36700 -> y=36700/100= 367
x + 40 = 307
x = 307 - 40
x = 267
Vậy x = 267
x + 40 = 307
x = 307 - 40
x = 267