Prealgebra

Front

What is an inequality?

Back

An inequality is a mathematical statement that compares two expressions using symbols such as >, <, ≥, or ≤.

Front

What does the symbol '>' mean?

Back

The symbol '>' means 'greater than'. For example, x > 5 means x is greater than 5.

Front

What does the symbol '<' mean?

Back

The symbol '<' means 'less than'. For example, x < 3 means x is less than 3.

Front

What does the symbol '≥' mean?

Back

The symbol '≥' means 'greater than or equal to'. For example, x ≥ 4 means x is greater than or equal to 4.

Front

What does the symbol '≤' mean?

Back

The symbol '≤' means 'less than or equal to'. For example, x ≤ 7 means x is less than or equal to 7.

Front

How do you solve the equation x + 9 = 21?

Back

To solve for x, subtract 9 from both sides: x = 21 - 9, so x = 12.

Front

What is the solution to the inequality x + 5 ≤ 13?

Back

To solve for x, subtract 5 from both sides: x ≤ 13 - 5, so x ≤ 8.

Front

How do you simplify the expression 6x + 12x + 3y?

Back

Combine like terms: 6x + 12x = 18x, so the simplified expression is 18x + 3y.

Front

What is a solution to an inequality?

Back

A solution to an inequality is a value that makes the inequality true when substituted into it.

Front

What does it mean if x > 9?

Back

It means that x can be any number greater than 9, such as 10, 11, or 12.