\(0,7:x=0,75-0,5:x\)

\(0,7:x+0,5:x=0,75\)

\(1,2:x=0,75\)

\(x=1,6\)

\(0,7.x=0,75-0,5.x\)

\(0,7.x+0,5:x=0,75\)

\(1,2:x=0,75\)

\(x=1,6\)

Vậy : x = 1,6

\(0,7:x=0,75-0,5:x\)

\(0,7:x+0,5:x=0,75\)

\(\left(0,7+0,5\right):x=0,75\)

\(1,2:x=0,75\)

\(x=1,2:0,75\)

\(x=1,6\)

mong bn đọc lại nội quy nhé!

ko đăng câu hỏi linh tinh

I. Nội qui tham gia "Giúp tôi giải toán"

1. Không đưa câu hỏi linh tinh lên diễn đàn, chỉ đưa các bài mà mình không giải được hoặc các câu hỏi hay lên diễn đàn;

2. Không trả lời linh tinh, không phù hợp với nội dung câu hỏi trên diễn đàn.

3. Không "Đúng" vào các câu trả lời linh tinh nhằm gian lận điểm hỏi đáp.

Các bạn vi phạm 3 điều trên sẽ bị giáo viên của Online Math trừ hết điểm hỏi đáp, có thể bị khóa tài khoản hoặc bị cấm vĩnh viễn không đăng nhập vào trang web.

bảo bối thần kì???

Nowadays, a variety of environmental problems affect our entire world. But now that most important thing for our life is being polluted. A clean environment is necessary for a peaceful and healthy life. When fossil fuels i.e. oil, coal and gas are burned to provide energy for cooking, lighting etc. they form polluting gases. In the sea, oils spills pollute sea water and kill marine life. Artificial fertilisers pollute river water, killing wildlife and spreading disease. Pollution could be prevented by: Keep clean environment ; Use recycled paper to help save trees ; Plant more trees ; Try to avoid buying plas ; To protect environment we also have to save energy ; Walk more, drive less  ; to protect natural resources ; to conserver wild life ; to conserve the old forest, rainforest, to prohibit hunters who hunt wild animals out of the law .When we protect the environment, it’s mean we are protecting ourselves and our future as well. I hope that in the future the earth will be cleaner.

Environment is an essential part of our life. A clean environment is necessary for a peaceful and healthy life. An environment is the natural surroundings which helps human beings, animals and other living things to grow and develop naturally. But nowadays, our environment is disturbing many diffrent ways. Any type of disturbance in the nature's balance affects the environment totally. It does not onlyruin human lives but also affects the environment with the lttle step taken by everyone on the earth. We should reduce the amount of waste, throwing wates preperly to its place only... and many other simple ways. It on very inportant to save envirnment  for human existeence.When we protect the envinment, we are protecting our selves and our future as well

Society is constantly developing, but it cannot be denied that the development brings us a lot of negative environmental issues. Almost all of us have faced environmental pollution, but that problem sometimes is not serious enough for us to actually pay attention. Climate change and the greenhouse effect are always the keywords in most of the environmental pollution topics, but they are usually too big and vague for everyone to understand. To put it down in a simpler way, environmental pollution is what surrounds us every day. Dust from traffic means, noise, rubbish on the streets, or the bad smell comes from rivers is pollution. There are many forms of pollution such as air pollution, soil, water, light or noise pollution. We live in pollution and get used to it so much that we do not even noe it. This not only affects the Earth in general, it also directly affects our health. Emissions are always one of the leading causes of respiratory illness, and climate change is indirectly causing natural disasters everywhere from all over the world. Developed countries are planning a lot remedies to control the seriousness of environmental pollution, but the most important thing is the awareness of each individual. Every one of us can contribute to decrease the level of pollution in our daily activities. If we all have a sense of protection for our environment, we can still develop without destroying the Earth.

Bài 2: Độ dài đáy bé HC là:

              4,5−1,5=3 (dm)

Diện tích hình bình hành ABCH là:

              (4,5+3)×3,2:2=12 (dm²)

                                      Đáp số: 12 dm²

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ko nhé

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moa you 

11

Câu hỏi:

  5 + 6 = ?

Trả lời:

  5 + 6 = 11

11 xin k nha 

tớ cung bảo bình lớp 7 luôn nè