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= 90
= 184
= 60
= 20
= 56
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2 .
90 – 8 ( ) = 82
82 : 6 = 13 + 4
1 -13 , 2 ½ - 26+2 = 28
, 12 .
1 . : 29 .
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12 : 3 = 4
* = = ½ ,
.. 4 .
: 29 - 4 = 25
: 29 + 4 = 33
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, 8 - 33 .
, 20 , 8 , 12 3 .
56 . 12 , 44 .
. 8 ( )
: 56
33 () + 28 ( )+ 28( )=89
: 20 + 44 = 64
25 () + 32() +32( )= 89
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( ) ( ) , 20 2*2 4 .
= 186 ( )
= 150
= 178
= 36
= 80
= 40
= 133
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72 – 36 = 36 ( 133 )
36 : 2= 18 ( )
18+ 1= 19 ( )
133 : 19 = 7
18 2 7 .
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- 26 .
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80 ( ) - 26 ( ) = 54 ( )
186 () – 150 () = 36 ( 2 )
36: 4= 9
54: 9= 6
9 6 2 . , - .
:
178 () – 150 ()= 28 ( 40 ( ) 2 2 )
28 : 4= 7
7 +1 = 8
40 : 8 = 5
7 5 2 . , , .
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