化简：-5a+(3a-2)-(3a-7)
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化简：-5a+(3a-2)-(3a-7)化简：-5a+(3a-2)-(3a-7)化简：-5a+(3a-2)-(3a-7)-5a+(3a-2)-(3a-7)=-5a+3a-2-3a+7=-5a+5-5A
化简：-5a+(3a-2)-(3a-7)
化简：-5a+(3a-2)-(3a-7)
化简：-5a+(3a-2)-(3a-7)
-5a+(3a-2)-(3a-7)
=-5a+3a-2-3a+7
=-5a+5
-5A+5
-5a+(3a-2)-(3a-7)=-5a+3a-2-3a+7=-5a+5
原式=-5a+3a-2-3a+7
=-5a+5
=5(1-a)
-5a+3a-2-3a+7
-5a+5
-5a+(3a-2)-(3a-7)
=-5a+3a-2-3a+7
=-5a+5
化简; a-2a+3a-4a+5a-6a+``````-2006a+2007a.
化简：a-2a+3a-4a+5a-6a+.+2010a+2011a.
化简a+2a-3a-4q+5a+6a-7a-8a+...2001a+2002a-2003a-2004a
化简(a+ 3)(a-3) (a-5)(a+7)-2a(a-1)
a-2a+3a-4a+5a-6a+7a-8a+9a-10a+11a.+99a-100a=
5(a*a*b-3*a*a*b)-2*(a*a*b-7*a*b*b)
化简（—a^3+3a^2-7a+5）+（5a^-6a)-(a^3-4a+7)
化简（—a^3+3a^2-7a+5）+（5a^-6a)-(a^3-4a+7)
[-a*(-2a)^3*(-a)^5]^7
化简 3a-[5a-(a+2)+a]-1
合并同类项：a-2a-3a+4a+5a-6a-7a+8a+9a-10a-11a+12a+……+2008a+2009a-2010a-2011a
化简 a-2a+3a-4a+5a'''''''+99a-100a a=-2 的值
化简：a(a*a-1)+2a*a(a+1)-3a(2a-5)拜托了各位
化简：-5a+(3a-2)-(3a-7)
化简：-5a+【3a-2】-【3a-7】
化简a-2a+3a-4a+5a-6a…+99a-100a
化简5a^2-[a^2+(5a^2-2a)-2(a^2-3a)]
a^2-16/a^2-2a-3 *a-3/a^2-5a+4 化简