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X x 27 - 178 = 15050
X x 27 =15050+178
X x 27 = 15228
X = 15228 : 27
X = 564
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63 x 178 - 53 x 178
=178 x ( 63 - 53 )
=178 x 10
=1780
63 x178 - 53 x 178 = (63-53)x178 = 10 x178 = 1780 nha e , 100% đúng nha
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a) 1968 x 15 + 1968 x 84 + 1968
= 1968 x 15 + 1968 x 84 + 1968 x 1
= 1968 x (15 + 84 + 1)
= 1968 x 100 = 196800
b) 6412 + 5378 + 3582 + 4628
= (6412 + 5378) + (3582 + 4628)
= 11790 + 8210
= 20000
c) 178 x 101 - 178
= 178 x 101 - 178 x 1
= 178 x (101 - 1)
= 178 x 100
= 17800
d) 153 x 8 + 153 + 153
= 153 x 8 + 153 x 1 + 153 x 1
= 153 x (8 + 1 + 1)
= 153 x 10
= 1530
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29 x 178 - 29 x 78.
= 29 x ( 178 - 78 )
= 29 x 100
= 2900
K mk nha
Mk k lại
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a) => 12925 : x = 3522 - 3247
12925 : x = 275
x = 12925 : 275
x = 47
b) => 17658 : x = 149 + 178
17658 : x = 327
x = 17658 : 327
x = 54
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a, 178 593 + 5x = 427 158
5x = 427 158 - 178 593
5x = 248 565
x = 248 565 : 5
x = 49 713
b, 976 318 - x : 2 = 764 280
x : 2 = 976 318 - 764 280
x : 2 = 212 038
x = 212 038 x 2
x = 424 076
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a: \(1968\cdot15+1968\cdot84+1968\)
\(=1968\left(15+84+1\right)\)
\(=1968\cdot100=196800\)
b: \(6412+5378+3582+4628\)
\(=\left(6412+4628\right)+\left(5378+3582\right)\)
\(=11040+8960=20000\)
c: \(178\cdot101-178\)
\(=178\cdot101-178\cdot1\)
\(=178\left(101-1\right)=178\cdot100=17800\)
d: \(153\cdot8+153+153\)
\(=153\left(8+1+1\right)\)
\(=153\cdot10=1530\)
x = ( 15050 + 178 ) : 27
x = 564
\(x.27-178=15050\)
\(27x=15050+178\)
\(27x=15228\)
\(x=15228:27\)
\(x=564\)
Vậy x = 564 ( Lưu ý : dấu ". " = dấu nhân