5x-3×https://bgk-photo.cdn.bcebos.com/doc/pic/item/738b4710b912c8fcc2fa03cef4039245d68821a3.jpg=https://bgk-photo.cdn.bcebos.com/doc/pic/item/1f178a82b9014a90cbf9ccbea1773912b21beeea.jpg．
5x-3×https://bgk-photo.cdn.bcebos.com/doc/pic/item/738b4710b912c8fcc2fa03cef4039245d68821a3.jpg=https://bgk-photo.cdn.bcebos.com/doc/pic/item/1f178a82b9014a90cbf9ccbea1773912b21beeea.jpg．
发布时间：2025-09-10 17:14:35
=
， 5x-
，5x
， 5x÷5=
， x=0.7．
