GCSE Maths - Algebra Substitution

If there are 3 variables in an equation and you know the value of 1, can you find the rest? In this GCSE Maths video, you will learn about substitutions to solve such problems.

Equations are widely used all around the world. To represent the relationship between multiple things such as force, mass and acceleration in physics, we know the equation for the second law of motion, i.e. F = ma. If we know the values of two of these three variables, we can efficiently work them out to get the value of the third one. After watching this GCSE Maths lesson, you will be able to substitute values in variables and work out algebraic expressions successfully.

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Our complete list of GCSE Maths lessons are shown below:

GCSE Year 10 Maths:

• Place Value
• Addition and Subtraction
• Multiplication and Division
• Rounding
• Time
• Negative Numbers
• Powers and Square Roots
• Pictograms
• Bar Charts
• Factors, Multiples and Primes
• Powers, Roots and BIDMAS
• Coordinates
• Calculation Problems
• Systematic Listing
• Using a Calculator
• Writing, Simplifying and Ordering
• Fractions
• Mean, Median, Mode & Range
• Algebra: Collecting Like Terms
• Substitutions
• Reflections
• Rotations
• Enlargements
• Translations
• Mixed Transformations
• Straight Line Graphs
• Areas of Compound Shapes
• Solving Equations
• Frequency Trees

GCSE Year 11 Maths:

• Error Intervals
• Fractions
• Simplifying Ratio
• Sharing Ratio
• Estimation
• Percentages
• Proportions
• Percent Change
• Exchange Rates
• Substitutions
• Units and Conversions
• Reflections
• Rotations
• Enlargements
• Translations
• Mixed Transformations
• Straight Line Graphs
• Areas of Compound Shapes
• Solving Equations
• Frequency Trees

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