Mathematics
Junior High
Resolved
中2数学
答えの順番が違うのですが、これだと×ですか？
(3) 2x+y+7x+3y+x
(247)x
(1H3
十夏
2ズ x +yt 3ytx
(3) 2x+y+7x°+3y+x
=(2+7)x+x+(1+3)y
=9x°+x+4y
2
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そうなんですね！
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