六年级二个班向“希望工程”捐款,二班捐的比一班的2倍还多18元,二班捐款158元,一班捐款多少元?
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![六年级二个班向“希望工程”捐款,二班捐的比一班的2倍还多18元,二班捐款158元,一班捐款多少元?](/uploads/image/z/390302-62-2.jpg?t=%E5%85%AD%E5%B9%B4%E7%BA%A7%E4%BA%8C%E4%B8%AA%E7%8F%AD%E5%90%91%E2%80%9C%E5%B8%8C%E6%9C%9B%E5%B7%A5%E7%A8%8B%E2%80%9D%E6%8D%90%E6%AC%BE%2C%E4%BA%8C%E7%8F%AD%E6%8D%90%E7%9A%84%E6%AF%94%E4%B8%80%E7%8F%AD%E7%9A%842%E5%80%8D%E8%BF%98%E5%A4%9A18%E5%85%83%2C%E4%BA%8C%E7%8F%AD%E6%8D%90%E6%AC%BE158%E5%85%83%2C%E4%B8%80%E7%8F%AD%E6%8D%90%E6%AC%BE%E5%A4%9A%E5%B0%91%E5%85%83%3F)
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六年级二个班向“希望工程”捐款,二班捐的比一班的2倍还多18元,二班捐款158元,一班捐款多少元?
六年级二个班向“希望工程”捐款,二班捐的比一班的2倍还多18元,二班捐款158元,一班捐款多少元?
六年级二个班向“希望工程”捐款,二班捐的比一班的2倍还多18元,二班捐款158元,一班捐款多少元?
2x+18=158
x=70
一班70元
3x-2x=110
x=110
x(1+2+3)=660