解化简题

7x-(5x-5y)-y=______． 5．23a3bc2-15ab2c+8abc-24a3bc2-8abc=______． 6．-7x2+6x+13x2-4x-5x2=______． 7．2y+(-2y+5)-(3y+2)＝______． 11．(2x2-3xy+4y2)+(x2+2xy-3y2)=______． 12．2a-(3a-2b+2)+(3a-4b-1)=______． 13．-6x2-7x2+15x2-2x2＝______． 14．2x-(x+3y)-(-x-y)-(x-y)＝______． 5(m2-1)=_____.5m2-6m-5=_____.5(3m+1)=_____.3ab-4ab+8ab-7ab+ab=______． -5x-x-(-7x)+(-3x)=______．7x-(5x-5y)-y=______． 2a－3－4a－a+5=_____. x-y-2x-(x+y)=______.(3x-5y)x(-3 y)=______.5a＋2a－a＋3a－=_____.-7x2+6x+13x2-4x-5x2=______． -(5m2+6m-5)=______.2y+(-2y+5)-(3y+2)＝______． (-x-y)-2(x+y)=_____.3a2+5a+3b=______.2x-3y+4y2+2y+2x=______． 2a-(3a-2b+2)+(3a-4b-1)=______． 2y+2x-2y+2y=_______2x-(x+3y)-(-x-y)-(x-y)＝______． 2x+2y-3x-2(x-y)=______． (1-x)-1-(x-1)=______． -[y-(2x+y)]3x(-x-y)=_______.-(-7x)+(-3x)=______． 3x-y-(2x+y)=______．3a-(2a-3b)+5b=______.3(a-2b)-b=______．[(2n-1)+2m]-5m=_____.[(2n-1)+2m+n2+2]=_____.[2n+2n]+5n=______.6x-y-5y+x=______.(5a+2a)2-3-4a=_____.5a-3a-5+9a=_____.2(b-2a)+3b=______(2x-y)-2y=_____.2x-3y+2y+2x=______2n+2m+n+2=_____.-5x-7x+3x=______-(-7x)+(2x)=______．
-2(x+y)-[y-(2x+y)]=______．

解题思路： 化简
解题过程：
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最终答案：略