① 5x + 54 < X-1 ② 2 (1-3x) & gt; 3x + 20 ③ 2 (1-3 + x) < 3 (x + 2) ④ (x + 5) & lt; 3 (X-5) - 6 solution inequality

① 5x + 54 < X-1 ② 2 (1-3x) & gt; 3x + 20 ③ 2 (1-3 + x) < 3 (x + 2) ④ (x + 5) & lt; 3 (X-5) - 6 solution inequality

1、4x-55/4
2.2-6x>3x+20
-18>9x
x

The nonnegative integer solutions of the inequality system 5x-2 & gt; 3 (x + 1) X-2 & lt; = 14-3x are————
emergency

5x-2>3(x+1)
5x-2＞3x+3
5x-3x＞3+2
3x＞5
x＜5/3
x-2

If the solutions of inequality (A-1) x & lt; a + 5 and 2x & lt; 4 about X are the same, then the value of a is____ .

. inequality (A-1) x

2 (x + 3 & lt; 3-5 (X-2) 3 of X + 1-2 of 2x + 1 & lt; 1 solution inequality

2(x+3)

Solve the system of inequalities ① 2 (x + 3) & lt; = 13-5x ② (x + 1) / 3 - (2x + 1) / 2 & lt; 1

2(x+3)

The solution set of 1-2 / 1 x & lt; 2 / 1 x 3 / 2 x + 4 > x is

1-(1/2)xx
2x+4>3x
4>3x-2x
x

On the inequality system of X: 2x-1 / 3 ≥ x + 1 / 2, ① x + a ≤ 0, ② the solution set is x ≤ 2, find the value of A

I have two minutes left. I'll give you an answer later

When he calculates a number divided by 23, he mistakenly regards it as multiplying by 23. The wrong answer is 24, and the correct answer is 24______ ．

Xiaohua divided a number by 6 / 7 and calculated it by 6 / 7. The result is 15. What's the correct answer?

Suppose the original number is a
a*6/7=15
a=15*7/6
The answer is 15 * 7 / 6 / (6 / 7) = 245 / 12

When Xiao Ming calculates a number divided by 4 / 7, it is regarded as multiplying by 4 / 7, the result is 48, and the correct result is ()

When Xiao Ming calculates a number divided by 4 / 7, it is regarded as multiplying by 4 / 7, the result is 48, and the correct result is ()
Let this number be x, then
X times 4 / 7 = 48
X = 48 / 4 / 7 = 84
This number divided by four out of seven = correct result = 84 / four out of seven = 147