Linear equations

After studying this section, you will be able to:

solve linear equations
set up a linear equation, using symbols, from given information

Solving linear equations

NOTE:Check your solution by substituting it back into the original equation to ensure that both sides (expressions) are in fact equal.

Setting up linear equations

From information given in words or on a diagram you will be asked to set up and solve an equation for an unknown quantity.

NOTE:

Always state what your letter represents.

Always check that your equation fits thegiven ‘story’ byre-reading it against your equation.

When forming an equation, always make it clear what your letters represent and remember to check your answer by

putting it into the story – does it fit?

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