Solving-Linear-Equations Aqa Foundation

Solving linear equations

What are linear equations?

• A linear equation is one that can be written in the form

  • and  are numbers and is the variable

    • 2x + 3 = 5

    • 3x + 4 = 1

    • x – 5 = -3

• The greatest power of x is 1

  • There are no terms like x²

How do I solve linear equations?

• You need to use operations like adding, subtracting, multiplying and dividing to get x on its own

• Any operation you do to one side of the equation must also be done to the other side

• For example, to solve look at the +1 on the left

  • Undo this by subtracting 1 from both sides and simplifying

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