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5,65.13,8+35,7.3,21+5,65.21,9+35,7.1,14
=5,65.(13,8+21,9)+35,7.(3,21+1,14)
=5,65.35,7+35,7.4,35
=35,7.(5,65+4,35)
=35,7.10
=357
![](https://rs.olm.vn/images/avt/0.png?1311)
A = 5,65 x 35,7 + 35,7 x 5,65
A = ( 5,65 x 35,7 ) x 2
A = 201,705 X 2
A = 403,41
![](https://rs.olm.vn/images/avt/0.png?1311)
8,8911+0,0999×9,99×0,1
8,911+0,99801×0,1
8,911+0,0998001
9,0108001
![](https://rs.olm.vn/images/avt/0.png?1311)
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= 67,3 x 0,01 + 67,3 x 9,99
= 67,3 x (0,01+9,99)
=67,3 x 10
= 673
Tick nha
![](https://rs.olm.vn/images/avt/0.png?1311)
(x - 5,3) : 4,2 = 5,65
x - 5,3 = 5,65 x 4,2
x - 5,3 = 23,73
x = 23,73 + 5,3
x = 29,03
![](https://rs.olm.vn/images/avt/0.png?1311)
x x 0,25 = 24,42 - 5,42 = 19
x = 19 : 0,25 = 76
(x-5,3) = 5,65 x 4,2 = 23,73
x = 23,73+5,3 = 29,03
k mk nha
X.0,25+5,42=24,42
X.0,25=24,42-5,42
X.0,25=19
X=19:0,25
X=76
(X-5,3):4,2=5,65
(X-5,3)=5,65.4,2
X-5,3=23,73
X=23,73+5,3
X=29,03
![](https://rs.olm.vn/images/avt/0.png?1311)
247,06 + 316,492 = 563,552 | 642,78 ? 213,472 | 37,14 x 82 = 3045,48 |
152,47 + 93 = 245,47 | 100 - 9,99 = 90,01 | 0,524 x 304 = 159,296 |
Đ/S : 26049,1