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Let X be the number of bicycles

Let y be the number of unicycles

The equation for the number of tires is: 2X + Y = 46

Since there are 8 more bicycles than unicycles, we also have X = Y + 8

Substitute Y + 8 for X in the first equation to get:

2(Y + 8) + Y = 46

Solving for Y: 2Y + 16 + Y = 46; 3Y = 46 - 16; 3Y = 30; Y = 10

X = Y + 8 = 10 + 8 = 18

18 bicycles and 10 unicycles

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