758-175-25-86简便计算

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758-175-25-86简便计算
758-175-25-86简便计算

758-175-25-86简便计算
758-175-25-86
=758-(175+25)-86
=758-86-200
=558-86
=458+100-86
=458+14
=472

=758-(175+25)-56-30
=558-56-30
=502-30
=472