473-(173+88)怎样简算?
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473-(173+88)怎样简算?
473-(173+88)怎样简算?
473-(173+88)怎样简算?
把括号去掉,加号变成减号
473-(173+88)
=473-173-88=300-88=212
473-(173+88)
=(473-173)-88
=300-88
=212
473-(173+88)
=(473-173)-88
=(473-173)-(100-12)
=300-100+12
=200+12
=212