(0.2X+5)x5=28.6(方程)
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(0.2X+5)x5=28.6(方程)(0.2X+5)x5=28.6(方程)(0.2X+5)x5=28.6(方程)(0.2X+5)x5=28.60.2X*5+5*5=28.6x+25=28.6x=28
(0.2X+5)x5=28.6(方程)
(0.2X+5)x5=28.6(方程)
(0.2X+5)x5=28.6(方程)
(0.2X+5)x5=28.6
0.2X*5+5*5=28.6
x+25=28.6
x=28.6-25
x=3.6