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「xとyの関係を式に表わせ」と言われたときは、「y=ax」の式にすればよいです!

200gのお菓子が¥800
→x=200、y=800
y=ax
800=200a
4=a
より、y=4xが答えとなります。

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Answers

(1)
4x=y

(2)150g

間違えてたらすいません

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