A=19911991199119911991.1991,(1991个1991),A除以13,余数是几用方程解,把过程写清楚
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![A=19911991199119911991.1991,(1991个1991),A除以13,余数是几用方程解,把过程写清楚](/uploads/image/z/2452880-56-0.jpg?t=A%3D19911991199119911991.1991%2C%281991%E4%B8%AA1991%29%2CA%E9%99%A4%E4%BB%A513%2C%E4%BD%99%E6%95%B0%E6%98%AF%E5%87%A0%E7%94%A8%E6%96%B9%E7%A8%8B%E8%A7%A3%2C%E6%8A%8A%E8%BF%87%E7%A8%8B%E5%86%99%E6%B8%85%E6%A5%9A)
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A=19911991199119911991.1991,(1991个1991),A除以13,余数是几用方程解,把过程写清楚
A=19911991199119911991.1991,(1991个1991),A除以13,余数是几
用方程解,把过程写清楚
A=19911991199119911991.1991,(1991个1991),A除以13,余数是几用方程解,把过程写清楚
1991 mod 13 = 2
19910000 mod 13 = 2*10000 mod 13 = 6
199100000000 mod 13 = 6*10000 mod 13 = 5
1991000000000000 mod 13 = 5*10000 mod 13 = 2
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1991 mod 3 = 2
x=((1991-2)*(2+6+5)+2+6) mod 13=1988 * 13 mod 13 + 8 mod 13 = 8