一旦十進数に直して計算しましょう！
10100（二進数）＝2^2＋2^4（十進数）＝20
1001（二進数）＝2^0＋2^3＝9
20−9＝11＝2^3＋2^1＋2^0＝1011（二進数）
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一旦十進数に直して計算しましょう！
10100（二進数）＝2^2＋2^4（十進数）＝20
1001（二進数）＝2^0＋2^3＝9
20−9＝11＝2^3＋2^1＋2^0＝1011（二進数）
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are also looking at these questions 😉
