Joke Collection Website - Cold jokes - A thought-provoking math problem, math experts and good friends, give me some advice.
A thought-provoking math problem, math experts and good friends, give me some advice.
In the equation of equal sign, moving the negative number from one side to the other does not affect the equation, but in your question, it is required that when x > 0, it becomes an inequality. At this time, it is necessary to move the negative number from one side to the other and change the direction of the unequal number. You are in the second grade. I think you should learn this rule, and this is where you are wrong. In fact, it is also right for you to divide by -2 directly in the denominator, and it is because this law is wrong to go down.
X=(m+ 1)/-2, when x >; 0，(m+ 1)/-2 >； 0 means: m+ 1
You can actively use your head to find mistakes when you are only in the second day of junior high school, which shows that you are a good student who is actively studying. I believe you will learn well. Come on!
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