a,3/2.3/2-5/6:(12)^2+2 b,3-(6/7)^0+1/2^2:2

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1. `a)3/2×3/2-5/6-5/6÷(12)^2+2`

   `=9/4-5/6-5/6÷144+2`

   `=27/12-10/12-5/6×1/144+2`

   `=17/12-1/120+2/1`

   `=170/120-1/120+240/120`

   `=409/120`

   `b)3-(6/7)^0+(1/2)^2÷2`

   `=3-1+1/4×1/2`

   `=2+1/8`

   `=16/8+1/8`

   `=17/8`

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2. Giải thích các bước giải:

   `a,3/2. 3/2-5/6:(12)^2+2`
   `=9/4-5/6:144+2`
   `=9/4-5/6 . 1/144+2`
   `=9/4-5/864+2`
   `=1944/864-5/864+2`
   `=1939/864+2`
   `=3667/864`
   `b,3-(6/7)^0+1/2^2:2`
   `=3-1+1/4:2`
   `=2+1/4 . 1/2`
   `=2+1/8`
   `=16/8+1/8`
   `=17/8`

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