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Bjr

A = 32/4-3²+7×3

A = 8-9+21

A = -1+21

A= 20

B = 4+[4×-(17-12)]

B = 4+[4×-5]

B = 4+(-20)

B = -16

C = 2-3×4/2³-2×5

C = (2-12/8-10)

C = -10/-2

C = 5

D = (2-3)³×4/8-10×2

D = -1²×4/8-20

D = 1×4/-12

D = 4/-12

D = 1/-3

D = - 1/3

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