1100-【250+（800-24*26）】*2
=1100-【250+（800-624）】*2
=1100-(250+176)*2
=1100-426*2
=1100-952
=148
递等式计算：1100-【250+（800-24*26）】*2
1100-【250+（800-24*26）】*2
=1100-【250+（800-624）】*2
=1100-(250+176)*2
=1100-426*2
=1100-952
=148