30-2.7x=3.8-15.5解方程怎么算

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30-2.7x=3.8-15.5解方程怎么算
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30-2.7x=3.8-15.5解方程怎么算
30-2.7x=3.8-15.5解方程怎么算

30-2.7x=3.8-15.5解方程怎么算
30-2.7x=3.8-15.5
2.7x=30-3.8+15.5
2.7x=41.7
x=41.7/2.7
x=139/9

30-2.7x=3.8-15.5
30-2.7x=-11.7
2.7x=41.7
x=139/9

30-2.7x=3.8-15.5
2.7x=30-3.8+15.5
2.7x=41.7
x=41.7/2.7
x=139/9
简单的