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一天晚上,我做数学题的时候发现了一个问题:当我写到11-5=6的时候,忽然想到1+5也等于6,我很奇怪,为什么1变成10,符号变成减号结果还是一样呢?
One night when I did a math test, I noticed a problem: when I wrote 11-5 = 6, I suddenly thought that 1 + 5 was equal to 6 too. I was surprised that why 1 became 10 and the sign became a minus sign The result is still the same?