1+6=3+( 4 ) 4+( 1 )=6-1 8-1=( 2)+5
5+2=9-( 2 ) 5+( 2 )=8-1 8-( 6 )=4-2
( 2)+4=9-3 7+( 2 )=10-1 ( 8)-5=4-1
( 7 )-2=4+1 9-1=(5 )+3 7-( 2 )=10-5
9-4=7-(2 ) ( 6)-2=1+3 7-6=5-( 4 )
4-2=9-( 7 ) 3+4=(5)+2 7-2=3+( 2 )
2+8=(5 )+5 ( 8 )-5=10-7 9+( 1)=8+2
( 9)-6=10-7 8-5=( 2)+1 1+( 9 )=6+4
6+( 1 )=5+2 1+1=( 9 )-7 9-2=(8 )-1
9-( 2)=1+6 1+(1 )=3-1 7-1=2+(4 )