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![](https://rs.olm.vn/images/avt/0.png?1311)
[ (315 +372) x (3+7)] :338 + 1036
[687x 10] :1374
6870 : 1374
5
![](https://rs.olm.vn/images/avt/0.png?1311)
a) A= ( 5016+912).37:13:74
A= 5928.37:13:74
A=219336:13:74
A=16872:7
A=228
b) B=[687.3+687.7]:(338+1036)
B=687.(3+7):1374
B=687.10:1374
B=6870:1374
B=5
![](https://rs.olm.vn/images/avt/0.png?1311)
a) A=(5016 +912).37:13:74
A=5928.37:(13.74)
A=219336: 962
A=228
b) B=[(315+372).(3+7)]:(338+1036)
B=(687.10):1374
B=6870:1374
B=5
![](https://rs.olm.vn/images/avt/0.png?1311)
\(27.332+93.43+57.61+69.57\\ =27.332+93.43+57.\left(61+69\right)\\ =27.332+93.43+57.130\\ =8964+3999+7410=20373\\ 34.75+75.66-65.100\\ =\left(34+66\right).75-65.100\\ =100.75-65.100\\ =100.\left(75-65\right)\\ =100.10=1000\\ \left(456.11+912\right).37:13:74\\ =5928:13:\left(74:37\right)\\ =456:2=228\\ 6^2:4.3+2.5^2\\ =36:4.3+2.25\\ =9.3+50=27+50=77\\ 5.4^2-18:3^2\\ =5.16-18:9\\ =80-2=78\\\left[\left(315+372\right).3+\left(372+315\right).7\right]:\left(26.13+74.14\right)\\ =687.\left(3+7\right):\left(338+1036\right)\\ 687.10:1374\\ =6870:1374=5\\ 12:\left\{390:\left[500-\left(125+35.7\right)\right]\right\}\\ =12:\left[390:\left(500-370\right)\right]\\ =12:\left(390:130\right)=12:3=4\\ 192000-\left(1500.2+1800.3+1800.2:3\right)\\ =192000-\left(3000+5400+1200\right)\\ =192000-9600=182400\)
![](https://rs.olm.vn/images/avt/0.png?1311)
![](https://rs.olm.vn/images/avt/0.png?1311)
( 456 x 11 + 912 ) x 37 : 13 : 74
= ( 5016 + 912 ) x 37 : 13 : 74
= 5928 x 37 : 13 : 74
= 219336 : 13 : 74
= 16872 : 74
= 228
( 315 + 372 ) x 3 + ( 372 + 315 ) x 7 ] : ( 26 x 13 + 74 x 14 )
= [ 687 x 3 + 687 x 7 ] : ( 338 + 1036 )
= [ 687 x ( 3 + 7 ) ] : 1374
= 6870 : 1374
= 5
Mỏi tay quá k mình với ?????
a. = 228
b. = 5