x-(x-2.5)÷5=20.5,+x等于几
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x-(x-2.5)÷5=20.5,解:5x-x+2.5=102.5x=25
咨询记录 · 回答于2023-03-12
x-(x-2.5)÷5=20.5,+x等于几
x-(x-2.5)÷5=20.5,解:5x-x+2.5=102.5x=25
有解析吗?
x-(x-2.5)÷5=20.5,解:5x-(x-2.5)÷5×5=20.5×55x-x+2.5=102.55x-x+2.5-2.5=102.5-2.54x=100x=25