Mathematics
Senior High
写真の合同式についてなのですが、なぜ、
11÷4の余りである3を写真のように3x≡1(mod4)と変形できるのですか？
問題 次の方程式の整数解を求めよ。
(1) 11x + 4y = 1
(2) 35x +48y = 3
[1X=1| (mod 4)
√3x21 (mod 4)
(3) 101x + 1001y = 11
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