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求解方程式:222.15-x/x*100%=-1.21%,
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求解方程式:222.15-x/x *100%=-1.21%,
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222.15-x/x *100%=-1.21%?
假如是:[(222.15-x)/x ]*100%=-1.21%
[(222.15-x)/x ]*100%=-1.21%
[(222.15-x)/x ]=-1.21%
两边同乘x:
222.15-x=-1.21%x
222.15=x-0.0121x
x=222.15/(0.9879)=2221500/9879=740500/3293≈223.86
假如是:[(222.15-x)/x ]*100%=-1.21%
[(222.15-x)/x ]*100%=-1.21%
[(222.15-x)/x ]=-1.21%
两边同乘x:
222.15-x=-1.21%x
222.15=x-0.0121x
x=222.15/(0.9879)=2221500/9879=740500/3293≈223.86
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