1259+x=3457
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![](https://rs.olm.vn/images/avt/0.png?1311)
![](https://rs.olm.vn/images/avt/0.png?1311)
( x + 1259 ) x 5 = 67845
( x + 1259 ) = 67845 : 5
( x + 1259 ) = 13569
x = 13569 - 1259
x = 12310
![](https://rs.olm.vn/images/avt/0.png?1311)
![](https://rs.olm.vn/images/avt/0.png?1311)
(1259 - 3y) : 5 = 55
=> 1259 - 3y = 275
=> 3y = 984
=> y = 328
( 1259 - y x 3 ) : 5 = 55
1259 - y x 3 = 55 x 5
1259 - y x 3 = 275
y x 3 = 1259 - 275
y x 3 = 984
y = 984 : 3
y = 328
![](https://rs.olm.vn/images/avt/0.png?1311)
`3457 - 27 xx 8 - 8 xx 73 + 6543`
`= 3457 + 6543 - 27 xx 8 - 8 xx 73`
`=(3457 + 6543) - (27 xx 8 + 8 xx 73)`
`= 10000 - 8xx (27+73)`
`= 10000 - 8 xx 100`
`= 10000 - 800`
`= 9200`
![](https://rs.olm.vn/images/avt/0.png?1311)
![](https://rs.olm.vn/images/avt/0.png?1311)
![](https://rs.olm.vn/images/avt/0.png?1311)
3457 - 27 x 48 - 48 x 73 + 6543
= (3457 + 6543) - (27 x 48 + 48 x 73)
= 10000 - 48 x (27 + 73)
= 10000 - 48 x 100
= 10000 - 4800
= 5200
Ủng hộ mk nha ^_-
![](https://rs.olm.vn/images/avt/0.png?1311)
A = 3457 - 27\(\times\) 48 - 48 \(\times\) 73 + 6543
A =(3457 + 6543) - ( 27 \(\times\) 48 + 48 \(\times\) 73)
A = 10 000 - 48 \(\times\) ( 27 + 73)
A = 10 000 - 48 \(\times\) 100
A = 100 \(\times\) ( 100 - 48)
A = 100 \(\times\) 52
A = 5200
1259 + x = 3457
x = 3457 - 1259
x = 2198
x=3457-1259
x=2198