算一算。/d/S;t:F.N6q/p,t
2+6+1=;t)l)u,q/i5?2d0T 9-9+5=7Q1v1d4O,y:R3}1o,q(e*f-L 10-7+2=:y:_9f/M(d/d/S;t:F.N6q/p,t
3+4-2=+L2D(B3v(f'M7L9a+f2U)G3y*i*r/N 10-3-7=/~5Z*R7\4f1Y1g3W-~ 6+4-8=:P/I9C3u'p7T/~;C/d/S;t:F.N6q/p,t
8-4+2=0[+O;I,T-x/c4Q:A;j2c1n 5+3-6=/g)x9O)|*y+Z6r1w 10-4-6=4z4\'T3r'd/d/S;t:F.N6q/p,t