Mathematics
Senior High
(4)の答えでX＝5k＋7、Ｙ＝13k－18は合ってますか？
280 次の方程式の整数解をすべて求めよ。
*(2) 5x+7y=1
(5)
95
(1)
*(4)
18
5/90
2x+5y=1
x7
13x+5y=1
10
26
45 85
50
12
12x+17y=1
eyt
Answers
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