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Solving-Linear-Equations Wjec-Eduqas Higher
Exam code:C300
Solving linear equations
What are linear equations?
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A linear equation is one that can be written in the form
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and
are numbers and
is the variable
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2x + 3 = 5
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3x + 4 = 1
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x – 5 = -3
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The greatest power of x is 1
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There are no terms like x2
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How do I solve linear equations?
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You need to use operations like adding, subtracting, multiplying and dividing to get x on its own
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Any operation you do to one side of the equation must also be done to the other side
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For example, to solve
look at the +1 on the left
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Undo this by subtracting 1 from both sides and simplifying
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