7 -  1+6=??, 1 - 3-2=??, 5 - 2+2+1=??, 6 - 3+3=??, 2 - 4-2=??, 8 - 8+0-0=??, 3 - 7-4=??, 10 - 5+5=??, 9 - 6+3,

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