( 4 ) + ( ) – ( 7 ) + ( ) – ( – 3 ) – ( ) – ( 9 ) – ( ) = – 6

( ) + ( ) – ( –3 ) + ( ) – ( ) – ( ) + ( 9 ) – ( ) = 14

( ) + (– 5 ) – ( ) + ( ) – ( ) + ( – 7 ) – ( ) + ( – 8 ) = 4

( – 7 ) – ( ) + ( ) + ( ) – ( – 9 ) + ( 3 ) – ( ) – ( ) = 12