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(1)5 + ( )= 8
(2)8 + ( )= 10
(3) ( )- 2 = 3
(4)( ) - 4 = 1
(5)( ) + 2 = 10
(6)( ) + 1 = 8
(7)4 - ( )= 2
(8)( ) - 1 = 1
(9)9 -( ) = 0
(10)( ) - 6 = 2
(11)( ) + 1 = 10
(12)5 +( ) = 8
(13)( ) + 5 = 8
(14)8 +( ) = 10
(15)( ) + 3 = 4
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