解方程.8X+3×0.9=6.3

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解方程.8X+3×0.9=6.3解方程.8X+3×0.9=6.3解方程.8X+3×0.9=6.38X+3×0.9=6.38x=6.3-2.78x=3.6x=0.45x=(6.3-2.7)/8=0.48

解方程.8X+3×0.9=6.3
解方程.8X+3×0.9=6.3

解方程.8X+3×0.9=6.3
8X+3×0.9=6.3
8x=6.3-2.7
8x=3.6
x=0.45

x=(6.3-2.7)/8=0.4

8X+3×0.9=6.3
8X+2.7=6.3
8X+2.7-2.7=6.3-2.7
8X=3.6
x=0.45