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数学 中学生

この2ページを9分15秒で解きました。 これって遅いですか? テストに向けて時間を計って練習しています。 厳しめにお願いします🤲 因みに2ミスでした。

=×(-5)-2.x×(-5)+3×(15) →かっこをはず =(-6)×4x+(-6)×(-3y) →かっこをはずす かっこをはずすときの符号のミスや,分数の約分ミスに 特、訓 P6-7 3多項式と数の巣法, DP4) 注意しましょう。 1同類項をまとめる 同類項(文字の部分が同じである項)を,分配法則を使っ てまとめます。 次の計算をしなさい。 次の式の同類をまとめて簡単にしなさい。 回0 3.r+2r+5y-y =(3+2).r+(5-1)y GO 5(a-26) =5×a-5×26 7分配法則を使ってかっこをはずす 同類項をまとめる =5a-106 =5r+4y 5a-10b ー=ー1y 5.c+4y -6(4.r-3y) 分配法則を使って G2 a-5a+2a =(1-5)a°+2a 同類項をまとめる =-24.r+18 -24x+18 =ー4a°+2a (z-2r+3)× (15) -4aと2aは同類項ではないから, これ以上は計算できないよ。 分配法則を使っ -4a+2a (大阪 =-5+10r-15 -5+10xー O 3.c-9y+5.x+4y =3.r+5r-9y+4y |項を並べかえる (12m-6n)-6 分数の 別解 形にする 同類項をまとめる 12m-6n 6 =8.2-5y (12m-6n)x 8.c-5y 2 1 6n 2m 6 6 1 1 =12mX- 6-6 2筆算の形で計算する 同類項と定数項を縦にそろえて書いて計算します。 減法 での符号のミスに気をつけましょう。 OP5 =2m-n =2m-n 2m- (28.ェ-49.r°)-(17) 28.c-49.x° -7 次の計算をしなさい。 別解 1 2.r-5y 回2 3.2+4y +) 4.r+7y -)6.2+5y (28.c-49.2')×[- 6.c+2y -3.x-y 28x 49.2° =28.r×(-)-9 2.r+4.r: -5y+7y 3.r-6.x 4y-5y =-4x+7.r" =-4x+7.r° =6x =2y =-3x =ーリ の co 10.x-15y 4 a+36+2 青森 回6 (4.x°-8.c+2) 2-16y ー)a- b+4 11.-31」 46-2 10.c+x a-a ニー =0 -15y+(-16y) ー31y 2 0 (18a-246+6c) 3 36-(-b) =46 わる数を逆数にして 2-4 =(18a-24b+6c)×- 分配法則を かっこをは =-2 3 12 3 =18a× --246×+6c 筆算の形の計算は, 2章「連立方程式」でよく使うよ。 1 =27a-366+9c 27a- 32

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英語 中学生

答え合わせお願いします。 間違っている問題や空欄の問題は教えてください。

in China. But now he is famous for following the CROSSING THE WORLD ON A RICKSHAW TO SEE THE OLYMPICS 'hen Chen Guan Ming was a young man, he never travelled far from his farm in a small village When he arrived in London, he met lots of tourists and told them his story. Some people didn't believe him. Then he showed them the stamps in his passport, and the photos of himself at places like the Eiffel Tower in Paris and Petronas Towers in Kuala Lumpur. Olympic Games around the world in his three-wheeled rickshaw.The story began in 2001, when he heard that the games were coming to Beijing. He left his village and cycled 90,000 km all over China, visiting 1,764 cities before finally arriving at the famous Bird's Nest Stadium. Then, he decided to travel to London for the 2012 Olympics. In 2010, he packed his things into his rickshaw and began his journey. He slept in his rickshaw and sometimes worked for food and money. Finally, he got to France, and caught a ferry to Britain. He only travels by boat or plane when there's no other choice. After the London Olympics, Chen left his rickshaw in the UK and caught a flight home to plan his next trip-to the Rio Olympics. In 2013, he flew back to London. He put his rickshaw on a ship to Canada, and he tooka plane there. A friend paid for his flight ticket. Then, he got on his rickshaw and rode to Brazil through the US, Mexico and Central America. The journey took three years. He had an amazing time in Rio and made lots more friends. 十余年野 on, more than

解決済み 回答数: 1