清朝农业:一道初一数学题 急用
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去括号,合并同类项
1-(1-(1-x)-x)
1-(1-(1-x)-x)
1-(1-(1-x)-x)
=1-(1-1+x-x)
=1-0
=1
1-(1-(1-x)-x)
=1-(1-1+x-x)
=1-0
=1
1-(1-(1-x)-x)
=1-(1-1+x-x)
=1-0
=1
绝对正确!!!~
你放心 嘻~
1-(1-(1-x)-x)
=1-(1-1+x-x)
=1-0
=1
1-(1-(1-x)-x)
=1-(1-1+x-x)
=1-0=1
1-(1-(1-x)-x)
=1-(1-1+x-x)
=1-(0+0)
=1-0
=1