（1-9）x(3-6)
=(-8)x(-3)
=24;
(9-1)x96-3)
=8x3
=24;
(1+9÷3)x6
=(1+3)x6
=24;
(1+9)x3-6
=10x3-6
=30-6
=24;
3x(6-1)+9
=3x5+9
=15+9
=24;
9x(3-1)+6
=9x2+6
=18+6
=24;
（1-9）x(3-6)
=(-8)x(-3)
=24;
(9-1)x96-3)
=8x3
=24;
(1+9÷3)x6
=(1+3)x6
=24;
(1+9)x3-6
=10x3-6
=30-6
=24;
3x(6-1)+9
=3x5+9
=15+9
=24;
9x(3-1)+6
=9x2+6
=18+6
=24;
……
供参考。
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