x-3.5×0.8=7.2列方程,
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![x-3.5×0.8=7.2列方程,](/uploads/image/z/442423-55-3.jpg?t=x-3.5%C3%970.8%3D7.2%E5%88%97%E6%96%B9%E7%A8%8B%2C)
x-3.5×0.8=7.2列方程,
x-3.5×0.8=7.2列方程,
x-3.5×0.8=7.2列方程,
x-3.5×0.8=7.2
x-2.8=7.2
x=2.8+7.2
x=10
10
X-2.=7.2
X=9.2
7.48
x-3.5*0.8=7.2
x-2.8=7.2
x=2.8+7.2
x=10