去括号,得495.6x=33.84
系数化为一,得x=0.682
貌似你抄错题了~写清楚点4.2x 11 8x=3×(1.2+9.4）题目
4.2x 11 8x=3×(1.2x 9.4) 解方程并检验
4.2x 11 8x=3×(1.2x 9.4) 解方程并检验
数学人气：583 ℃时间：2020-03-23 16:45:23
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