(- 11 and 2 / 3) divided by 2 - (- 20 and 1 / 2) divided by 2 + 10.5 divided by 2 Please tell me | Math enthusiast | Mathematical art

(- 11 and 2 / 3) divided by 2 - (- 20 and 1 / 2) divided by 2 + 10.5 divided by 2 Please tell me

It's 29 / 3. It's recorded by multiplication,
（－35/3+41/2+21/2)×1／2
The original solution is 58 / 3 × 1 / 2
＝29/3

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