When x is taken, the opposite number of the difference between x 2 / 1 and 2x 5 / 1 is not positive?

When x is taken, the opposite number of the difference between x 2 / 1 and 2x 5 / 1 is not positive?

According to the meaning of the title,
-[(x+1)/2-(2x-1)/5]≤0,
That is, (x + 1) / 2 - (2x-1) / 5 ≥ 0
5(x+1)-2(2x-1)≥0,
5x+5-4x+2≥0,
x+7≥0,
x≥-7
Therefore, when x ≥ - 7, the opposite number of the difference between X + 1 and 2x + 1 is non positive

If the value of the algebraic expression 3x + 4 is not greater than 0, then the value range of X is ()
A. x＜-43B. x≤-43C. x＜43D. x≥43

According to the meaning of the question: 3x + 4 ≤ 0, the solution is x ≤ - 43

If the value of the algebraic formula 4x + 2 is not less than 3x + 0.5, the value range of X is obtained, and the maximum negative integer and the minimum positive integer satisfying this condition are obtained

4x+2>=3x+0.5
x>=-1.5
The maximum negative integer satisfying the condition is - 1, and the minimum positive integer is 1

If the value of the algebraic formula - 4x + 2 is not greater than the value of - 3x + 0.5, the maximum negative integer and the minimum positive integer satisfying this condition are obtained

-4x+2≤-3x+0.5
x≥1.5
There is no maximum negative integer, and the minimum positive integer is 1