Question

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

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

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

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

Answer 1

Respuesta:

( 4 ) + ( 2 ) – ( 7 ) + ( 8 ) – ( – 3 ) – ( 5 ) – ( 9 ) – ( 2 ) = – 6

( 5 ) + ( 5 ) – ( –3 ) + ( 6 ) – ( 5 ) – ( 8 ) + ( 9 ) – ( 1 ) = 14

( 15 ) + (– 5 ) – ( 8 ) + ( 25 ) – ( 1 ) + ( – 7 ) – ( 7 ) + ( – 8 ) = 4

( – 7 ) – ( 5 ) + ( 2 ) + ( 13 ) – ( – 9 ) + ( 3 ) – ( 2 ) – ( 1 ) = 12