Question

resolver -1/2(21/2-1/4(11/2-31/4))-11/4(11/2-21/4).​

Answer 1

-1/2(21/2 - 1/4(11/2 - 31/4)) - 11/4(11/2 - 21/4)

-1/2 × (21/2 - 1/4 × (-9/4) - 11/4 × 1/4

-1/2 × (21/2 + 9/16) - 11/16

-1/2 × 177/16 - 11/16

-177/32 - 11/16

-199/32

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