From place a to place B, it takes 1.4 hours for someone to walk more than by bus. It is known that the walking speed is 5 kilometers per hour, and the bus speed is 40 kilometers per hour. Suppose that the distance between place a and place B is x kilometers, then the equation is________________ .

x÷5-1.4=x÷40
8x-56=x
x=8

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