| <span style="font-family: 宋体; font-size: 10.5pt; mso-bidi-font-size: 12.0pt; mso-ascii-font-family: " times="" new="" roman";="" mso-hansi-font-family:="" "times="" mso-bidi-font-family:="" mso-font-kerning:="" 1.0pt;="" mso-ansi-language:="" en-us;="" mso-fareast-language:="" zh-cn;="" mso-bidi-language:="" ar-sa"="">解比例。 | |||
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(1)x=1.2 (2)x=
(3)x=0.02
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(2)
=
(3)x:6=0.7:0.28(4)20:3=50:x
