(X-3800)/(X/0.17)=0.04

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(X-3800)/(X/0.17)=0.04
(X-3800)/(X/0.17)=0.04

(X-3800)/(X/0.17)=0.04
解方程:
(X-3800)/(X/0.17)=0.04
X-3800 =0.04(X/0.17)
X-3800 =(4/17)x
(13/17)x=3800
x=3800÷13/17
x=68400/17
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