合并同类项:3a+(-8a+2)-(3-4a)化简、求值:1∕4(-4x+2x-8)-(一分之二乘以x-1)

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合并同类项:3a+(-8a+2)-(3-4a)化简、求值:1∕4(-4x+2x-8)-(一分之二乘以x-1)
合并同类项:3a+(-8a+2)-(3-4a)
化简、求值:1∕4(-4x+2x-8)-(一分之二乘以x-1)

合并同类项:3a+(-8a+2)-(3-4a)化简、求值:1∕4(-4x+2x-8)-(一分之二乘以x-1)
3a+(-8a+2)-(3-4a)
=(3-8+4)a+(2-3)
=-a-1
1∕4(-4x+2x-8)-1/2(x-1)
=1/4(-2x-8)-1/2(x-1)
=-1/2*x-2-1/2*x+1/2
=-x-3/2

-a-1
-x-1

合并同类项:3a+(-8a+2)-(3-4a)
=3a-8a+2-3+4a
=-a-1
化简、求值:1∕4(-4x+2x-8)-(一分之二乘以x-1)
1/4(-2x-8)-1/2(x-1)
=-1/8(x+4)-1/2(x-1)

合并同类项:
解:原式=3a-8a+2-3+4a
=-a-1
化简、求值:
解:原式=1/4(-2x-8)-1/2(x-1)
=-1/2*x-2-1/2*x+1/2
=-x-3/2