X-(X-2000-X*0.18)*0.15+X*0.18=7000此题有解吗?

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X-(X-2000-X*0.18)*0.15+X*0.18=7000此题有解吗?X-(X-2000-X*0.18)*0.15+X*0.18=7000此题有解吗?X-(X-2000-X*0.18)*0.

X-(X-2000-X*0.18)*0.15+X*0.18=7000此题有解吗?
X-(X-2000-X*0.18)*0.15+X*0.18=7000此题有解吗?

X-(X-2000-X*0.18)*0.15+X*0.18=7000此题有解吗?
x - (x - 2000 - 0.18 x ) *0.15 + 0.18x = 7000
x - 0.15x + 300 + 0.027x + 0.18x = 7000
1.057x = 6300
x ≈ 5960.3

慢慢算

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