化简9X-{6-〔-3x+(-1-4x)〕+2x}一步步的计算哦

问题描述:

化简9X-{6-〔-3x+(-1-4x)〕+2x}
一步步的计算哦

=9x-(6-(-7x-1)+2x)
=9x-6-7x-1-2x
=-7

9X-{6-〔-3x+(-1-4x)〕+2x}
=9x-{6-[-3x-1-4x]+2x}
=9x-{6+3x+1+4x+2x}
=9x-{9x+7}
=9x-9x-7
=-7