Curriculum
Mathematics — First Preparatory
Unit 1: Numbers
0/10
Unit 2: Algebra
0/4
Unit 3: Statistics
0/6
Unit 4: Geometry
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Text lesson
Linear Equations
Linear Equations
The linear equation
The linear equation
- An equation states that two expressions are equal, and at least one of them contains a variable.
- A linear equation of the first degree in one variable has the form ax + b = c, where a ≠ 0, and it has exactly one solution.
- A solution of an equation is the number that makes the two sides equal when it replaces the variable.
- The number 4 is a solution of 2x + 1 = 9, because 2 × 4 + 1 = 9.
Linear Equations · 1 / 5