Simultaneous Equations
Solving Rational Equations (Part 3)

Simultaneous Equations

Solving linear equations {revision}

• Solving basic linear equations
• Solving more complex linear equations
• Unknowns on both sides

Solving rational equations

• Solving rational equations (part 1)
• Solving rational equations (part 2)
• Solving rational equations (part 3)

Linear inequalities

• Solving linear inequalities​

Graphs of linear equations

• Finding the gradient
• Perpendicular gradients
• Graphing linear equations (slope-intercept form)
• Graphing linear equations (standard form)

Solving simultaneous equations (bicycle problem)

• Introduction problem
• Graphical solution
• Solution by substitution
• Solution by elimination​

Rational equations are equations involving fractions. To solve rational equations, we multiply all fractions with the lowest common denominator, then equate the result. 
​For fractions whose denominators involve the variable, the lowest common denominator is found in the same way as for numerical fractions.