Linear Equations

Learning OutcomesChanging the subject of a formula (Grade C/A)

Solve linear equations (Grade F/E)Solve linear equations with brackets (Grade E)

Solve linear equations with unknowns on both sides (Grade D)Set up and solve linear equations (Grade C)

Solve simultaneous linear equations (Grade B)Set up and solve simultaneous linear equations (Grade A)

Changing the subject of a formula

Changing the subject of a formula

Rules for changing the subject of a formula

Step 1. FRACTIONS? Remove any fractions by multiplying both sides by the denominator.Step 2. BRACKETS? Expand any brackets.Step 3. NEW SUBJECT ON BOTH SIDES? Collect the new subject on one side of the equals sign.Step 4. MORE THAN ONE OF THE NEW SUBJECT? Simplify or FactoriseStep 5. Rearrange to get the new subject on its own.

Changing the subject of a formula

Changing the subject of a formula

Changing the subject of a formula

Rules for solving linear equationsStep 1. BRACKETS? Expand any brackets.Step 2. UNKNOWN ON BOTH SIDES? Collect the new subject on one side of the equals sign.Step 3. Solve!

Solving Linear Equations

Solving Linear Equations

Solving Linear Equations

Solving Linear Equations

Solving Linear Equations

Solving Linear Equations

Solving Linear Equations

Solving Linear Equations

Solving Linear Equations (two operations)

Solving Linear Equations (two operations)

Solving Linear Equations (two operations)

Solving Linear Equations (with brackets)

Solving Linear Equations (with brackets)

Solving Linear Equations (with brackets)

Solving Linear Equations (two operations)

Solving Linear Equations (two operations)

Solving Linear Equations (x on both sides)

Solving Linear Equations (x on both sides)

Solving Linear Equations (x on both sides)

Solving Linear Equations (x on both sides)

Solving Linear Equations (x on both sides)

Set up and solve linear equations

Set up and solve linear equations

Set up and solve linear equations

Solve linear equations with fractions.

Solve simultaneous linear equations

Solve simultaneous linear equations

Solve simultaneous linear equations (substitution)

Solve simultaneous linear equations

Solve simultaneous linear equations

Solve simultaneous linear equations

Set up and solve simultaneous linear equations