giúp mik với nha
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Bài làm của mk nek:
2x+3x=5
=> x.(2+3)=5
=> x.5=5
=> x=5:5
=> x=1
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\(6,24-\left(30+x\right)=x-\left(28-10\right)\\ \Leftrightarrow24-30-x=x-18\\ \Leftrightarrow-6-x=x-18\\ \Leftrightarrow x-18+x+6=0\\ \Leftrightarrow2x-12=0\\ \Leftrightarrow2x=12\\ \Leftrightarrow x=6\)
6: \(\Leftrightarrow-6-x=x-18\)
\(\Leftrightarrow-2x=-12\)
hay x=6
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450x0,45+1,5x30x3+5x9x2,5
= 45 x (0,45 x 10) + 45 x 3 + 45 x 2,5
= 45 x (4,5+3+2,5)
= 45 x 10
= 450
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6. Mary asked me if she had to go then
7. John asked Nhi if Ha Long Bay was in northern Vietnam
8. Linh asked me if I would come to her house for dinner
9. The teacher asked Nam if Mount Everest was the highest mountain in the world
10. The young man asked Mary if she saw what he saw
______
III
1. The teacher told Nam to open the door
2. Hoa asked me to speak more slowly
3. Lan invited me to go to the movies that night
4. The teacher told us not to make noise in class
![](https://rs.olm.vn/images/avt/0.png?1311)
dễ mà =)
dễ thì mik đi hỏi mn làm j chỉ là dễ vs bn thôi:(