The expression that uses inequality symbols to express the relationship between magnitude and magnitude is an inequality.

An inequality containing unknown numbers consists of all the solutions (infinite numbers)

number line representation

Add (subtract) the same number (or formula) to both sides at the same time, and the sign remains unchanged.

Multiply (divide) the same positive number on both sides at the same time, the sign does not change

When both sides are multiplied (divided) by the same negative number at the same time, the sign changes.

Since there is only one unknown, the unknown is an inequality of degree one.

Go to the denominator

remove brackets

Move item

Merger of similar items

The coefficient is 1

1. If the problem contains "at least" then the column inequality

2. When "set", the word "at least" should be removed.

3. The final value should be "x≥a" or "x≤a" (a is a constant)

4. You should answer "at least"

It consists of several linear inequalities of one variable containing the same unknowns.

a>b