(-205)+400 3/4+(-204 2/3)+(-1 1/2)=?

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(-205)+400 3/4+(-204 2/3)+(-1 1/2)=?
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(-205)+400 3/4+(-204 2/3)+(-1 1/2)=?
(-205)+400 3/4+(-204 2/3)+(-1 1/2)=?

(-205)+400 3/4+(-204 2/3)+(-1 1/2)=?
(-205)+400 3/4+(-204 2/3)+(-1 1/2)
=(400-205-204-1)+(3/4-2/3-1/2)
=0+2/3-1/2
=1/6