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

Just add the ends together. Because every number is 1, just add the largest and smallest. After 2 plus 9,

The remaining 3 4 5 6 7 8

Up to three eights.

The remaining 4 5 6 7

Up to four sevens.

The remaining 56

Then even the best answer!