4x O.8xX5=16怎么解方程？ 一些数学，物理要求低的理工科专业

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解：4x+ O.8xX5=16
4x+4x=16
8x=16
x=16÷8
x=2

4ⅹXO.8ⅹ5=16
4ⅹ+4=16
8ⅹ÷8=16÷8
x=2
检验:
4ⅹ2+0.8ⅹ2ⅹ5
=8+1.6ⅹ5
=8+8
=16

4×0.8x×5=16
16x=16
x=16÷16
x=1

具体求法，

如图所示

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