3ax-b=0 (a不等于0)3-mx=nx+4 (m+n不等于0)(a-2)x-a-2=0 (a不等于0)

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3ax-b=0 (a不等于0)3-mx=nx+4 (m+n不等于0)(a-2)x-a-2=0 (a不等于0)
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3ax-b=0 (a不等于0)3-mx=nx+4 (m+n不等于0)(a-2)x-a-2=0 (a不等于0)
3ax-b=0 (a不等于0)
3-mx=nx+4 (m+n不等于0)
(a-2)x-a-2=0 (a不等于0)

3ax-b=0 (a不等于0)3-mx=nx+4 (m+n不等于0)(a-2)x-a-2=0 (a不等于0)
解(1)3ax-b=0 (a不等于0)
3ax=b
x=b/3a
解(2)3-mx=nx+4 (m+n不等于0)
(m+n)x=-1
x=-1/(m+n)
解(3)(a-2)x-a-2=0 (a不等于0)
(a-2)x=a+2
x=(a+2)/(a-2)