5X+8.865=88.

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5X+8.865=88.
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5X+8.865=88.
5X+8.865=88.

5X+8.865=88.
移项,
5x=88.8-8.865
合并同类项,
5x=79.935
系数化为1,
x=15.987

5x=88.8-8.865
5x=79.935
x=79.935/5
x=15.987

5X=88.8-8.865
5X=79.935
X=79.935/5
X=15.987

5X=88.8-8.865
5X=79.935
X=79.935/5
X=15.987

5X+8.865=88.8
5X=88.8-8.865
5X=79.935
X=79.935÷5
X=15.987



5X+8.865=88.8
5X+0.065=80
X+0.013=16
X=15.987